Using Endorsements to Gain Credibility with Your Audience

Using endorsements to gain credibility with your audience

A) rarely works, since most see it as a blatant sales pitch.
B) can be an effective strategy, as long as your audience views the person making the endorsement as an expert.
C) is fine for commercials and advertisements, but not otherwise.
D) makes you seem desperate and untrustworthy.
E) is effective only when your audience is hostile.