"I Like Sex, but Not Enough to Die for It

"I like sex, but not enough to die for it," says a young woman in an ad designed to persuade people to use condoms if they are sexually active.Why might this approach be ineffective? If people are

A) too frightened, they won't think rationally about the issue.
B) in a bad mood when they see the ad, they won't pay attention.
C) sexually active, the ad will be low in personal relevance.
D) not sexually active, the ad will put them in a bad mood.