What Do Critics of the Defence of Battered Women Syndrome

What do critics of the defence of battered women syndrome suggest will happen?

A) Women who use it will avoid punishment when they kill but were not abused.
B) Women who use it will be declared incompetent and lose custody of their children.
C) The burden of proof is too great to make the defence feasible for most.
D) The defence will not be useful because most women are abused by strangers.