Green Grocers,Inc

Multiple Choice

Green Grocers,Inc.,enters into a contract with Hiway Transport Company for the deliv?ery of a shipment of fresh produce.In a later dispute between these parties over the delivery,the doctrine of quasi contract cannot be used because

A) both of the parties involved are businesses.
B) at least one of the parties had greater bargaining power.
C) the subject of the contract was a service.
D) there is an actual contract covering the subject in dispute.