Kevin goes to the store to purchase a fully-automatic washing machine. He browses through several models of washing machines, but does not let the salesperson know that he wants a fully-automatic model While signing the sales contract, he does not notice that the model he is purchasing is a semi-automatic machine. After purchase, which of the following options does Kyle have?

A) Exchange the machine with a fully-automatic one and sue the store if its does not accept it.
B) Demand a full cash refund from the store for fraud in concealment.
C) Sue the store for its innocent misrepresentation.
D) Keep the semi-automatic washing machine as he made a unilateral mistake.

D