单选题 The author introduces the concept of class pictures in order to

• (A) illustrate photography's capacity for recording a historical moment
• (B) provide an example of photography that appears only to record but actually imposes aesthetic standards
• (C) demonstrate one area where photography is clearly more functional then painting
• (D) establish a case where photography is "transparent", i.e. independent of the photographer's aims
• (E) give an instance where photography is capable of democratizing an experience by converting it to an image