Which of the Following Statements About Developing Copy for Radio

Which of the following statements about developing copy for radio advertising is true?

A) The radio scripts given to the announcers do not contain information about any sound effects that might be used in the ad.
B) The copy used in radio scripts must never be intrusive.
C) One of the most challenging aspects of writing for broadcast media is making the script fit the time slot.
D) The primary determinant to whether an individual actually listens to radio copy is the time of day the ad is run.
E) The scene should be set quickly to establish the premise.