When Two Parties Are Involved in a Mutual Mistake (Misunderstanding)

When two parties are involved in a mutual mistake (misunderstanding) as to the meaning of a term of the contract, which of the following is usually applied by the court to settle the matter?

A) The equitable remedy of rectification
B) Caveat emptor
C) The reasonable person test
D) The court will find that there is no contract because there is no meeting of the minds.
E) Non est factum