Two Adults Enter into an Oral Contract for the Sale

Multiple Choice

Two adults enter into an oral contract for the sale and purchase of some land.All material facts were disclosed by the seller to the buyer.Which is true?

A) This contract is voidable because it is not in writing.
B) This contract is unenforceable because of the Statute of Frauds.
C) Because the parties are adults,it is certain that there is no problem with capacity.
D) This is a unilateral contract if only one party transfers land.