The correct answers are C and D. A useful Work Breakdown Structure converts project or study information into a structured breakdown of the total scope. In VM program planning, this supports clearer control of deliverables, responsibilities, schedule logic, and implementation follow-up. The WBS is not simply a chronological activity list; it is a structured decomposition of the work into defined, manageable elements. This aligns with standard project-management guidance that describes the WBS as a hierarchical breakdown of project work into smaller components or work packages. (Atlassian)

Option C is correct because identifying major milestones or high-level outputs and then decomposing them into manageable elements is a practical way to convert broad study information into usable work packages. Option D is also correct because breaking the project into defined elements is the core purpose of the WBS.

Option A is incorrect because chronological sequencing belongs more to scheduling, not WBS construction. Option B is incorrect because cost estimating may use the WBS later, but the WBS itself should be organized around scope, deliverables, and work elements rather than cost first. PMI also treats the WBS as a foundational project-control structure. (Project Management Institute)

Reference/topics: VM Programs; Work Breakdown Structure; Implementation Planning; Project Scope Decomposition; Deliverable Control.