Question: Question Help Activity Ron a CPM network has predecessors M and N, and has successor S. R has duration 5. N's late finish is 18,
Question Help Activity Ron a CPM network has predecessors M and N, and has successor S. R has duration 5. N's late finish is 18, while M'sis 20. S's late start is 22. Which of the following is definitely true? Activity Ron a CPM network has predecessors Mand N, and has successor S. R has duration 6. N's lato finish is 18, while M's is 20. S's late start is 22. Which of the following is definitely true? O A. Ris critical and has zero slack. OB. N is a critical activity OC. The set of times cannot all be possible. OD. Rhos no slack but is not critical OE. S is a critical activity
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