单选题 The argument of the passage best supports which of the following contentions concerning political art?

• (A) It has been considered to be more effective in producing change among certain political classes than among others.
• (B) Aesthetic judgments of artists are often positively reinforced by the political views of their critics.
• (C) Judgments of the value of an artist's work made by his or her critics must be discounted before a true judgment can be made.
• (D) In order to be highly regarded, an artist cannot be solely identified with one particular degree of political consciousness in her artwork.
• (E) Flexibility is the most valuable quality a political artist can have in maintaining the longevity of her career.