Who Among the Following Is a Low-Credibility Source

Multiple Choice

Who among the following is a low-credibility source?

A) John, an airline employee, who advertises the airline he works for
B) Daniel, a basketball player, who endorses an energy drink
C) William, an actor, who endorses multiple products
D) Jefferson, the CEO of a company, who has several years of experience in business management
E) Marcus, a police officer, who advertises a home protection method