Journalist: A book claiming that a new drug has dangerous side effects ... ...

Journalist: A book claiming that a new drug has dangerous side effects has recently been criticized by a prominent physician. However, the physician is employed by the company that manufactures that drug, and hence probably has personal reasons to deny that the drug is dangerous. Therefore, the critique does not provide legitimate grounds to reject the book’s claims about the drug’s side effects. The reasoning in the journalist’s argument is most vulnerable to criticism on which one of the following grounds?
(A) It fails to address adequately the possibility that the critique of the book called into question other claims made in the book in addition to the claim that the drug has dangerous side effects.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Dec 2012 LSAT (PT68): Logical Reasoning A