Detailed Instructions: In this task, you are given a context, a subject, a relation, and many options. Based on the context, from the options select the object entity that has the given relation with the subject. Answer with text (not indexes).
Q: Context: The Gulf of Mexico is an ocean basin largely surrounded by the North American continent. It is bounded on the northeast, north and northwest by the Gulf Coast of the United States, on the southwest and south by Mexico, and on the southeast by Cuba. The U.S. states of Alabama, Florida, Louisiana, Mississippi and Texas border the Gulf on the north, which are often referred to as the "Third Coast" in comparison with the U.S. Atlantic and Pacific coasts, or sometimes the "south coast", in juxtaposition to the Great Lakes region being the "north coast." One of the gulf's seven main areas is the Gulf of Mexico basin., Onykia is a genus of squids in the family Onychoteuthidae. Due to similarities between the genera, several recent authors consider the genus "Moroteuthis" a junior synonym of "Onykia". The type species is "Onykia carriboea", the tropical clubhook squid., Onykia carriboea, the tropical clubhook squid, is a squid in the family Onychoteuthidae, the type species of the genus "Onykia". It is known with certainty only from immature specimens. The type locality of "O. carriboea" is the Gulf of Mexico. "Onykia robsoni" has been suggested as a junior synonym, owing to similarities between the species., Onykia robsoni , the rugose hooked squid , is a species of squid in the family Onychoteuthidae . It occurs in the Antarctic Ocean , at an estimated depth of 250 -- 550 meters . The mantle of this species grows to a length of 75 cm. The species has been suggested as a junior synonym of Onykia carriboea , the tropical clubhook squid , due to similarities between the species ., Subject: onykia robsoni, Relation: parent_taxon, Options: (A) alabama (B) moroteuthis (C) onychoteuthidae (D) onykia
A:
moroteuthis