A: Project Communications
B: Project Procurement
C: Estimating the cost
D: Identifying the risk
The WBS represents all product and project work, including the project management work. The total of the work
at the lowest levels should roll up to the higher levels so that nothing is left out and no extra work is performed.
This is sometimes called the 100 percent rule.(PMBOK,P;131)
what is the correct answer?