Mark was shopping for a used car in February. He went to Auto Mega World and test drove a used 2000 Tiger XL. While driving the car, he looked at the climate control center and noticed that the temperature lever was marked "cold" at one end in blue and "hot" in red at the other end. Mark assumed that the "cold" marking meant that the car had air conditioning. Mark wanted to finally have an air-conditioned car. He did not discuss air conditioning in any way with the salesperson. Mark bought the car. Later, when Mark was showing his new car to friends, one of them pointed out to him that the car was not air conditioned. In this circumstance, which of the following is true? a) Mark can likely void the contract on the basis of mutual mistake. b) Mark can likely void the contract on the basis of unilateral mistake. c) Mark can likely void the contract on the basis of fraud by concealment. d) Mark can likely void the contract on the basis of fraud in the inducement. e) Mark cannot likely void the contract as it is a unilateral mistake