在项目审查会议期间，相关方A指出已更新一项可交付成果来反映来自相关方B的新需求。但是，相关方A未获告知并且不同意这一变更。项目经理下一步应该做什么？
During the project review session, Skateholder A indicated that it had updated a deliverable to reflect new requirements from Stakeholder B. However, Skateholder A was not informed and did not agree to the change. What should the project manager do next?
A：检查变更日志以确认相关方A的主张
Check the change log to validate the claim of stakeholder A
B：从项目中删除新需求
Remove new requirements from the project
C：要求相关方A和B之间召开会议以解决冲突
Request a meeting between stakeholders A and B to resolve the conflict
D：将新需求升级上报给项目发起人
Escalate new requirements to the project sponsor
先自己做一做，答案和解析见下一页。