The passage suggests that the mystification of the artistic process by certain art historians and artists can be traced to
A． the necessity of protecting artistic meaning from a general public who would most likely misunderstand and object to it
B． an unconscious tendency of non-artists to lionize those artists whom the public admires but fails to understand
C． a desire to protect and maintain the isolation between those who make art and those who analyze it, so as to reinforce the creative/critical distinction
D． a movement to expunge the challenging texts of dual artist/critics like Leonardo da Vinci and Mary Kelly from the critical canon
E． a distinction between the methodology of scholars, who tend to be erudite, and that of artists, who are more intuitive in their thinking processes