Critical Reasoning (CR) | Re: Sartore is a better movie reviewer than Kelly. A movie review

Sartore is a better movie reviewer than Kelly. A movie review should help readers determine whether or not they are apt to enjoy the movie, and a person who is likely to enjoy a particular movie is much more likely to realize this by reading a review by Sartore than a review by Kelly, even though Sartore is more likely to give a movie an unfavorable review than a favorable one.

Which one of the following, if true, most strengthens the argument?

(A) Sartore has technical knowledge of film, whereas