Activity R on a CPM Network Has Predecessors M and N

question 41

Multiple Choice

Activity R on a CPM network has predecessors M and N, and has successor S. R has duration 5. N's late finish is 18, while M's is 20. S's late start is 22. Which of the following is definitely TRUE?

• A) R is critical and has zero slack.
• B) R has no slack but is not critical.
• C) The set of times cannot all be possible.
• D) N is a critical activity.
• E) S is a critical activity.

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