Andrew and Marlene are at a restaurant discussing Marlene's potential purchase of Andrew's car. Atlength Andrew presents Marlene with an offer and indicates that he will hold the offer open for 12 hours. Marlene accepts and offers to pay for lunch, which she does. They part ways, and Marlene goes to the bank to arrange financing in order to purchase the car. When she calls Andrew and accepts the offer, he indicates that the car has been sold.

Applying the relevant principles of contract law, discuss possible legal arguments for each party