Donny offers to purchase Kyle's lava lamp collection for $2,500, the terms are set at $500 down and the remainder to be paid within 90 days. Kyle considers it a generous offer and would like to sell his collection but is concerned about Donny's ability to pay. To induce Kyle to sell the collection to Donny, Donny's sister, Marie, promises Kyle that if Donny doesn't pay in full she will. With this assurance, Kyle accepts Donny's offer. Which of the following is true? A. Marie's promise must be written to be enforceable
B. Marie is acting as an assignor.
C. The parties have created a collateral contract.
D. (All of the above)
E. A and C but not B.
