Which of the Following Statements About a Medium's Audience Is

Which of the following statements about a medium's audience is true?

A) It is unethical for media vehicles to try to attract advertisers by using audience demographics.
B) Data on the size of media audiences are almost nonexistent.
C) The media planner needs to know how closely the vehicle's audience matches the target market.
D) Audience refers to the number of people who remember seeing or hearing an ad.
E) The media planner is not concerned about media audience size because all information on audience demographics is typically fabricated.