Joan of Arc Was a Problematic Leader of the French

Joan of Arc was a problematic leader of the French forces during the latter part of the Hundred Years' War because:

A) she was a peasant woman.
B) she refused to wear armor even in the midst of battle.
C) she regularly fought with the military generals she was supposed to lead.
D) she was believed to be the mistress of the Dauphin.
E) she was illiterate.