During project planning, you estimate the time needed for each activity and then add the estimates to create the project estimate. You commit to completing the project by this date. What is wrong with this scenario? A. The team did not create the estimate, and estimating takes too long using that method B. The team did not create the estimate, and a network diagram was not used C. The estimate is too long and should be created by management D. The project estimate should be the same as the customer's required completion date