A project manager has prepared the project schedule for a new project. According to the project manager’s experience, the project will take two years to complete. However, the company director requests that project is completed in 18 months.What should the project manager do? 项目经理正在为一个新项目制定项目进度计划，根据项目经理的经验，该项目需要两年才能完成。然而，公司总监要求该项目在18个月内完成。项目经理应该怎么做？ ◑A.Revise the project schedule based on the director’s request根据总监的要求修订项目进度计划 ◑B.Use resource levelling to even out project team member’s tasks使用资源平衡，来平均项目团队成员的任务 ◑C.Reduce the project scope to meet the revised project schedule.减少项目范围以满足修订的项目进度计划 ◑D.Keep the project schedule unchanged, but show the impact this change would have on other constraints.保持项目进度计划不变，但显示这种变更对其能制约因素的影响
