Kramer and Biff Entered into a Formal Purchase and Sale

Multiple Choice

Kramer and Biff entered into a formal purchase and sale agreement with respect to Kramer's house.Two weeks later Biff revisited Kramer and offered to purchase all of Kramer's custom yard and deck furniture too.The price Biff offered was $2500 more than the last offer Kramer had received,and he accepted the offer.In these circumstances,were a dispute to ensue,what role would the parole evidence rule play?

A) It would be used to prevent extrinsic evidence regarding the oral agreement.
B) It would play no role; as the oral agreement deals with land and furniture, it is invalid.
C) It will be applied to prevent a challenge of the written agreement.
D) It would play no role owing to the distinct nature of the collateral contract and price.