Which of the following sentences represents an appropriate end date in a claim letter? ( )

A、Because we have enjoyed your prompt service in the past, we hope to receive the correct projectors by January 12.
B、We wish to end our contract with your company if you cannot improve your service.
C、Service calls were made to our Washington Street Office on May 20, May 22, and May 27 without resolving the problem.
D、Please replace the five Panasonic projectors we received on December 22 because the model numbers do not match the models ordere
D、