The Owner of Shane Corporation,a Jewelry Retail Chain,is the Voiceover

The owner of Shane Corporation,a jewelry retail chain,is the voiceover on all of his stores' commercials.He explains how his company differs from other chain stores and gives advice on buying jewelry.Because he is recognized as a professional jewelry expert,his appearance in his company's ads can enhance the ads' source:

A) credibility.
B) attractiveness.
C) power.
D) recognizability.
E) likability.