A project team is experiencing difficulties in delivering product increments. The project manager schedules a retrospective to identify gaps.Who should attend this meeting? 项目团队在交付产品增量时遇到困难，项目经理安排一次回顾总结会议以找出差错。谁应该参加这次会议？ ◑A.Steering committee members指导委员会成员 ◑B.All members directly involved in producing progress work for the project所有直接参与项目生产进度工作的成员 ◑C.The head of the project management office (PMO) and the project manager项目管理办公室（PMO）的负责人和项目经理 ◑D.The team leaders of each team involved in the project参与该项目的每个团队的团队领导
