Samuelson, who works for a major national newspaper, was offered a familiarization trip to an exotic location by a public relations firm representing the state's tourism industry

In exchange, Samuelson was asked by the firm to write a glowing review about the travel locale, which he could publish under his name. Samuelson politely declined the offer. Why did Samuelson decline?
a) He must disclose this to his employer as this free trip could cause him to write a too favorable article.
b) He cannot pitch it to other members of the media under his name without disclosing the payment.
c) His employer will not take the responsibility to let the reader know the context in which the story was written.
d) He has to mention the free trip as a part of the article.

a