Which of These Statements About Advertising Is Most Accurate

Which of these statements about advertising is most accurate?

A) Advertisers have the highest credibility of any element in the promotional mix.
B) A key advantage of advertising is its use of customized interactions.
C) Advertisers have very limited control over what they can say due to FCC regulations.
D) Advertising is the least costly form of promotion because ads go through significant pretesting.
E) Through advertising, a company can control what it says and, to some extent, to whom the message is sent.