The project manager must create the work breakdown structure (WBS) and analyze the technical details of project scope.What tool or technique should the project manager use? 项目经理必须创建一个项目的工作分解结构(WBS),并分析项目范围的技术细节。项目经理应使用什么工具或技术? ◑A.Brain storming头脑风暴 ◑B.Affinity Diagram亲和图 ◑C.Expert judgment专家判断 ◑D.Precedence Diagramming Method紧前关系绘图法(PDM)