Josephus Was a Psychology Major in College and Now Works

Josephus was a psychology major in college and now works for an ad agency. His boss tells him to create the type of ad that would be most believable. Joe remembers from General Psych 101 that

A) giving a direct, one-sided appeal to the consumer is best.
B) one-sided appeals never work.
C) two-sided product claims are the most believable.
D) two-sided appeals always work.