A project is working hard on deliverables to meet the planned schedule. One team member identifies that scope creep is affecting project costs. What should the project management do? 项目团队正在努力进行可交付成果的工作，以满足计划的进度。一名团队成员发现范围蔓延正在影响项目成本。项目经理应该怎么做？ ◑A. Perform risk assessment and scope change management procedures执行风险评估和范围变更管理程序 ◑B.Allow the scope creep and communicate it to the change control board (CCB) for approval允许范围蔓延，并与变更控制委员会（CCB）沟通以获得批准 ◑C.Estimate the impact on the project and communicate the findings to project stakeholders估算对项目的影响，并将结果传达给项目相关方 ◑D.Investigate why scope creep occurred and immediately initiate change management调查为什么会发生范围蔓延，并立即启动变更管理程序
