One Problem with the Fallacy of Appeal to Ignorance Is

One problem with the fallacy of appeal to ignorance is that usually:

A) the person making the argument is pretending to be less intelligent than he or she is
B) the person making the argument is insulting the person to whom he or she makes it
C) the person making the argument is insulting everyone who disagrees with him/her
D) it puts the burden of proof on a positive claim
E) it puts the burden of proof on a negative claim