GM Is Trying to Reinvent the Cadillac Brand with New

GM is trying to reinvent the Cadillac brand with new car designs and a new brand story. They commission an integrated marketing communications campaign using several media. A key component of their ads is music by contemporary groups like the Teddy Bears and Melikka. GM is considered:

A) the client
B) the advertising agency.
C) regulatory agencies that control advertising.
D) the audience member who receives a message.