Which of the Following Is True with Regard to Advertising

Which of the following is true with regard to advertising agencies?

A) They can be held legally liable for fraudulent or misleading advertising claims.
B) They can safely bypass product claims verification before using them in advertising.
C) They rarely submit ads for review as they cannot be held legally liable for false or deceptive advertising claims.
D) They never monitor their own practices.
E) They are major regulators of advertising for products sold in interstate commerce.