During project execution you as project manager are evaluating the WBS and re-estimating the time needed for each project task to complete and then adding the estimates of selected non-critical tasks to create a revised project schedule estimate. You commit to completing the project by this calculated date. Is there anything wrong with this approach?

A. NO

B. Yes - The Team did not create the estimate, and a a network diagram was not used

C. Yes - The estimate is probably too long and should have been created by the project Sponsor

D. Yes - The project estimate should be the same as the Customer's required completion date

E. Yes - the Team did not create the estimate, and the estimating takes too long using the noted method