A Party to a Contract May Be Able to Avoid

Multiple Choice

A party to a contract may be able to avoid the contract if:

A) there is a mutual mistake,and the party undertook to bear the risk by conscious allocation.
B) there is a unilateral mistake,and the party undertook to bear the risk by conscious ignorance.
C) there was a mistake and the mistaken party was at fault in not discovering the problem before making the contract.
D) None of these.