Question: A simple project network has three activities, D , E , and F . D is an immediate predecessor of E and of F .

A simple project network has three activities, D, E, and F. D is an immediate predecessor of E and of F. E is an immediate predecessor of F. The activity durations are D=4, E=3, F=10.
A.
The critical path is E-F
B.
The critical path is D-F, duration 12.
C.
The critical path is D-E-F, duration 17.
D.
Slack at E is 3 units.
E.
Slack at D is 3 units.

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