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 = 5, E = 4, F = 9.

A) The critical path is D-E-F, duration 18.
B) The critical path is D-F, duration 14.
C) Slack at D is 4 units.
D) Slack at E is 4 units.
E) The network has two critical paths.