business law.

Jack is considering selling his prized collection of comedy books to Diane. On Monday Jack writes to Diane offering to sell the collection for 100 and he further provides that he will keep the offer open until Thursday at 5pm. On Tuesday, following a change of mind, Jack sends a fax to Diane revoking the offer; however, Diane's fax machine is out of paper, and she does not receive the message until Wednesday morning.

On Tuesday, Diane had already posted to Jack her acceptance of the offer. Jack never received the letter of acceptance and as such at 6pm on Thursday Jack sold the collection to Bill.

Is Diane entitled to claim a breach of contract by Jack under the Contracts Act (Cap 106)?