Question: In this PERT example, the times for activity __________ are not valid. Activity Optimistic Time Most Likely Time Pessimistic Time A 3 4 5 B

In this PERT example, the times for activity __________ are not valid. Activity Optimistic Time Most Likely Time Pessimistic Time A 3 4 5 B 1 3 7 C 2 4 1 D 2 4 9

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