What Is the Most Likely Reason That Public Relations Communications

What is the most likely reason that public relations communications are viewed as more credible than advertising messages?

A) Many public relations communications are in the form of news articles or features stories.
B) All public relations communications are verified and researched by independent agencies.
C) Most public relations communications are openly sponsored and paid for by large firms.
D) Public relations communications are limited to non-profit organizations.
E) Public relations communications are highly specific.