Which of the Following Statements About Brand Ambassadors Is/are True

Which of the following statements about brand ambassadors is/are true?

A) Brand ambassadors can be the best salespeople a company can have.
B) Marketers recruit brand ambassadors because they cannot create buzz by themselves.
C) Marketers often identify brand ambassadors through blogs or competitions.
D) Brand ambassadors are usually heavy users and know the target audience because they are part of it.
E) All of the above