Teacher: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).
Teacher: Now, understand the problem? Solve this instance: Context: Mediabase is a music industry service that monitors radio station airplay in 180 US and Canadian markets. Mediabase publishes music charts and data based on the most played songs on terrestrial and satellite radio, and provides in-depth analytical tools for radio and record industry professionals. Mediabase charts and airplay data are used on many popular radio countdown shows and televised music awards programs. Music charts are published in both domestic and international trade publications and newspapers worldwide. Mediabase is a division of iHeartMedia., Nielsen Broadcast Data Systems, better known as BDS, is a service that tracks monitored radio, television and internet airplay of songs based on the number of spins and detections. The service, which is a subsidiary of Nielsen Corporation provides the basis for Nielsen Media publication "Billboard" in the United States, while in Canada, BDS helps determine the Canadian BDS Airplay Chart and the Canadian Hot 100 chart, which is published by "Jam!" and in the website for "Canadian Music Network", in determining their radio airplay music charts and determines the chart movement in "Billboard"<nowiki>'</nowiki>s Hot 100 chart when combined with single sales from Nielsen SoundScan. From August 2006 to its final June 2009 publication, BDS also provided chart data for "R&R" after Nielsen acquired the trade. On September 10, 2009, the website "Radio-Info.com" struck a partnership with Nielsen BDS to provide radio airplay charts and related data for over 20 formats., iHeartMedia, Inc. (formerly CC Media Holdings, Inc.) is an American mass media corporation headquartered in San Antonio, Texas. It is the holding company of iHeartCommunications, Inc. (formerly Clear Channel Communications, Inc.), a company founded by Lowry Mays and B. J. "Red" McCombs in 1972, and later taken private by Bain Capital, LLC and Thomas H. Lee Partners through a leveraged buyout in 2008. As a result of this buyout, Clear Channel Communications, Inc. began to operate as a wholly owned subsidiary of CC Media Holdings, Inc. On September 16, 2014, CC Media Holdings, Inc. was rebranded iHeartMedia, Inc.; and Clear Channel Communications, Inc., became iHeartCommunications, Inc., Satellite radio is  according to "article 1.39" of the International Telecommunication Unions (ITU) ITU Radio Regulations (RR)  a "Broadcasting-satellite service"., WCDA ( 106.3 FM , `` Your 106.3 '' ) plays adult top 40 music as it 's a Mediabase Hot AC reporter . Dale O'Brian in the mornings ., The Adult Top 40 (also known as Adult Pop Songs) chart is published weekly by "Billboard" magazine and ranks "the most popular adult top 40 as based on radio airplay detections measured by Nielsen Broadcast Data Systems.", Subject: wcda, Relation: instance_of, Options: (A) 1 (B) adult (C) august (D) billboard (E) broadcasting (F) capital (G) channel (H) chart (I) company (J) corporation (K) data (L) division (M) final (N) industry (O) internet (P) mass (Q) mass media (R) music (S) publication (T) radio (U) radio station (V) result (W) service (X) union
Student:
radio station