A Simple CPM Network Has Three Activities, D, E, and F

Multiple Choice

A simple CPM 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=8.

A) The critical path is D-E-F, duration 15.
B) The critical path is D-F, duration 12.
C) Slack at D is 3 units.
D) Slack at E is 3 units.
E) Both A and C are true.