Question: The main difference between PERT and CPM is that: Select one: O a. CPM assumes activity time can vary. O b. PERT assumes that activity

The main difference between PERT and CPM is that:

The main difference between PERT and CPM is that: Select one: O a. CPM assumes activity time can vary. O b. PERT assumes that activity time is known. O c. PERT is more accurate than CPM. O d. PERT employs three time estimates for each activity. O e PERT ignores activity costs

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