The project manager issued a change request regarding a customer request.

However, the customer is refusing to approve the change, claiming he does not agree with its schedule impact. The customer is also insisting that the change is critical and that delaying its implementation can compromise the project’s purpose. What should the project manager do?

A. Only implement the change if there is enough time available.

B. Do not implement the change.

C. Implement the change, but document the risk of schedule delay caused by the adopted change.

D. Explain the importance of managing changes.