The team has had five meetings to decompose the work of the aircraft carrier project. They are making progress and in a few more meetings should have all the decomposition complete for the multi-year project. Which of the following is not a benefit of using a WBS?

a. Describes the deliverables of the project

b. Helps the project team understand their role and buy-in on the project

c. Provides the justification for staff, cost, and time

d. Identifies special work packages that can be created outside the WBS, but within the project