Mark's Home Had Burned to the Ground

Multiple Choice

Mark's home had burned to the ground.When he met with his insurance adjuster,she accused him of burning down the house,and said she would have him criminally prosecuted if he didn't settle the claim for much less than the house was worth.Mark agreed to the settlement.If he changed his mind,he can probably rescind the settlement on the basis of

A) fraud.
B) duress.
C) undue influence.
D) mistake.