6. Core planning processes have clear dependencies that require them to be performed in essentially the same order on most projects. Which of the following is the correct order as a portion of core planning processes? A. Scope planning, scope definition, activity sequencing, activity duration estimation B. Scope definition, scope planning, activity definition, activity sequencing, activity duration estimation C. Scope planning, scope definition, activity sequencing, activity definition, activity duration estimation D. Activity duration estimation, scope planning, scope definition, activity definition, activity sequencing 核心计划过程有明确的依赖关系在大多数项目中要以同样的顺序必须完成下列哪一项符合核心计划过程的正确顺序. A. 范围规划--范围定义--活动排序--活动工期估计 B. 范围定义--范围规划--活动定义--活动排序--活动工期估计 C. 范围规划--范围定义--活动排序--活动定义--活动工期估计 D. 活动工期估计--范围规划--范围定义--活动定义--活动排序