Information:  - Diocletian, born Diocles (244312), was a Roman emperor from 284 to 305. Born to a family of low status in the Roman province of Dalmatia, Diocletian rose through the ranks of the military to become cavalry commander to the Emperor Carus. After the deaths of Carus and his son Numerian on campaign in Persia, Diocletian was proclaimed emperor. The title was also claimed by Carus' other surviving son, Carinus, but Diocletian defeated him in the Battle of the Margus. Diocletian's reign stabilized the empire and marks the end of the Crisis of the Third Century. He appointed fellow officer Maximian as Augustus, co-emperor, in 286.  - The Maghreb (or ; literally "sunset"; ', "the Arab West" previously known as Barbary Coast, derived from Berber), or the Greater Maghreb ("al-Maghrib al-Kabr"), is usually defined as much or most of the region of western North Africa or Northwest Africa, west of Egypt. The traditional definition as the region including the Atlas Mountains and the coastal plains of Morocco, Algeria, Tunisia, and Libya, was later superseded, especially following the 1989 formation of the Arab Maghreb Union (  ), by the inclusion of Mauritania and of the disputed territory of Western Sahara (mostly controlled by Morocco). During the Al-Andalus era in Spain (7111492), the Maghreb's inhabitants, Maghrebis, were known as "Moors"; the Muslim areas of Spain in those times were usually included in contemporary definitions of the Maghrebhence the use of "Moorish" or "Moors" to describe the Muslim inhabitants of Spain in Western sources.  - Libya ("") is a country in the Maghreb region of North Africa, bordered by the Mediterranean Sea to the north, Egypt to the east, Sudan to the southeast, Chad and Niger to the south, and Algeria and Tunisia to the west. The three traditional parts of the country are Tripolitania, Fezzan and Cyrenaica. With an area of almost , Libya is the fourth largest country in Africa, and is the 16th largest country in the world. Libya has the 10th-largest proven oil reserves of any country in the world.  - Publius Septimius Geta ( c. 143 - c. 203/c . 204 ) was the second son to the elder Publius Septimius Geta and wife Fulvia Pia . He was born and raised in Leptis Magna ( southeast of Carthage , modern Libya , North Africa ) . He was of Berber , Libyco - Punic and Roman ancestry . This Geta was more politically active than his father . Geta was appointed as a Decemvir which in part involved judging of litigation ( stlitibus iudicandis ) . He became a Tribune laticl . of the Legio II Augusta , an Aedile Cerealis , a Curator rei pub. Anconitanorum and a Praet . hastarius et tutel . Geta in 185 became a Legatus of the Legio I Italica and afterwards a Proconsul of Sicily around 187/8 . In 188 or circa 190 , he became Legatus of Lusitania . He was Suffect Consul in or around 191 . After his suffect consulship , around 193 or 194 , he became Legatus of Moesia Inferior . When Severus was proclaimed emperor in 193 , he headed with the legions to Carnuntum , where his brother was , to show his support . When his tenure as Legatus finished in Moesia Inferior , he became the Legatus for Dacia . Geta was appointed as Quaestor and Praetor of Crete and Cyrene and became one of the Consuls in 203 . Geta died around 203 or 204 . Before his death , Geta stated to Severus , that he hated Praetorian Guard Gaius Fulvius Plautianus and warned him of Plautianus ' treachery .  - Septimius Severus (11 April 145  4 February 211), also known as Severus, was Roman emperor from 193 to 211. Severus was born in Leptis Magna in the Roman province of Africa. As a young man he advanced through the "cursus honorum"the customary succession of officesunder the reigns of Marcus Aurelius and Commodus. Severus seized power after the death of Emperor Pertinax in 193 during the Year of the Five Emperors.  - Leptis Magna (also "Lepcis"; Neo-Punic "lpqy") was a prominent city in Roman Libya. Originally a Punic foundation, it was greatly expanded under emperor Septimius Severus (r. 193211), who was a native of the city.  "Legio III Augusta" was stationed here to defend the city against Berber incursions, and after the legion's dissolution under Gordian III in 238, the city was increasingly open to raids in the later part of the 3rd century. Diocletian re-instated the city as provincial capital, and the city grew again in prosperity until it fell to the Vandals in 439. It was re-incorporated into the Eastern Empire in 533, but continued to be plagued by Berber raids and never recovered its former importance.  It fell to the Muslim invasion in c. 647 and was abandoned.    After reading the paragraphs above, we are interested in knowing the entity with which 'publius septimius geta ' exhibits the relationship of 'brother'. Find the answer from the choices below.  Choices: - atlas  - carinus  - numerian  - septimius severus
septimius severus