A. A formally constituted group of stakeholders responsible for ensuring that only a minimal amount of changes occur on the project.正式组成的利害关系者小组负责保证项目的变量最小化

B. An informal or formal group of team members responsible for change to a project. 正式或非正式团队负责项目变更事宜

C. An informal group that has oversight of project implementation.非正式的小组对项目执行进行的监督

D. A formally constituted group of stakeholders responsible for approving or rejecting changes to the project baselines.正式组成的利害关系者小组负责审批或否决对项目基准计划的变更