The author of the passage explicitly disagrees with which of the following statements
A．In modem society even nonartists can master techniques that great artists of the fourteenth century did not employ.
B．The ability to represent a three-dimensional object on a flat surface has nothing to do with art.
C．In modem society the victory of representational skills has created a problem for art critics.
D．The way that artists are able to represent the visible world is an area that needs a great deal more study before it can be fully understooD、