project scope planning process

During the project scope planning process, the work breakdown structure should be developed to:

a.      The sub-project level

b.      The level determined by the project office

c.      A Level allowing for adequate estimates

d.      The cost center level

 

The question talks about scope planning process (not define or create WBS). Wouldn't it be choice B in this case? 

 

Ans is C - Because purpose of WBS is to decompose the work into smaller pieces to provide accurate estimates.

I could be wrong though.

 

 

It is about project scope planning and should only be planning of the scope of the project alone. Would it be overlapping a function when the estimates are inculded in the process? Correct me if i'm wrong with this: Is the other term for scope range or area covered? The word scope also support the objective and there is no cost mentioned either in the objective. I would select for A or B for my answer.

Moreover, the project scope planning results can be used as input data for estimates. Wherein all the project details are already concluded and classified.