A Sells an Old Vase to B and Both Parties

Multiple Choice

A sells an old vase to B and both parties believe that it is nothing special. B subsequently discovers that the vase is a precious antique from China and worth millions. What is the effect of this discovery on the contract?

A) The contract is now void for common mistake.
B) The contract is now voidable for common mistake.
C) The contract remains valid and is not voidable.
D) None of the options given is correct.