Maxine Offered to Sell Her Video Camera to Tom for $200

Multiple Choice

Maxine offered to sell her video camera to Tom for $200 and also stated to Tom,"I will give you two weeks to accept my offer." One week later Tom learned that Maxine had sold the video camera to Cindy.Maxine:

A) has revoked her offer to Tom.
B) must sell Tom a video camera for $200 because she made a firm offer to him.
C) must get the camera back from Cindy if Tom accepts within two weeks.
D) Both (b) and (c) are appropriate alternatives in this case.