Markel entered into a contract with Jaylin to paint a portrait for her in consideration of $600. This contract was freely negotiated. There was nothing in the terms of the agreement about when Markel had to start on the portrait or how long it should take him to finish. It took Markel a long time to complete the portrait, almost 18 months. Which of the following is true of this contract? a. It must be in writing because it took longer than one year to complete.
b. It must be in writing because it was for more than $500.
c. It is a unilateral contract.
d. The contract need not be in writing.