4. Able has made a valid offer to Baker to sell Baker his car. Which of the following demonstrates a way that could allow for the offer made by Able to be terminated? A. Lapse of a reasonable time B. Bakers counteroffer to Able C. Able revokes the offer D. All of the above

5. Donor pledges $20,000 to his local museum in writing to create a new dinosaur exhibit. The museum, without promising anything in return for this pledge, relies on the pledge and spends considerable money preparing workers for the exhibit, and canceling upcoming events. Under what theory of recovery would they rely to enforce the pledge? A. Promissory Estoppel B. Consequential damages C. Quantum Meruit D. Injunction