"which of the following statements about the creation of duration estimates is incorrect?"
1 MAathemmatical analysis like CPM, gERT, PERT indicate the dates on which the activity can be scheduled given resource limits and other contraints
2 Suration compression techniques, including fast tracking and crashing can help in decreasing the project Schedule
3 WBS classification alllows for useful activity ordering and sorting
4 the duration of the project is the sum of the duration of all the tasks in the project

What do you think of the option 1 ?