The author's primary purpose in mentioning van Gogh is most likely to

A． cite the case of an artist whose intention was to increase the mystification of the artistic process
B． discuss an artist whose life has been consistently distorted by biographers and filmmakers
C． give an example of an artist depicted as incapable of comprehending his own art work but able to do so in fact
D． provide an instance of an artist whose work can scarcely be understood without the assistance of art critics
E． mention the example of an artist whose critical faculties were rightly overshadowed by his artistic abilities