During project closure a project sponsor complains that the project did not increase the department’s knowledge of Java programming and therefore, the project is not complete. The customer has accepted the project. The project manager determines that all stated objective and deliverables have been met. He does not find evidence that Java programming was an objective .A review of project correspondence shows no mention of the deliverable. The project manager should：
A、close project
B、re-plan the project to include the new objective
C、meet with the team to discuss the issue and find a resolution
D、get the project stakeholders involved to help resolve the issue