Which of the following statements regarding CPM is TRUE?

A$)$ The critical path is the shortest of all paths through the network.

B$)$ The critical path is that set of activities that has positive slack.

C$)$ Some networks have no critical path.

D$)$ All activities on the critical path have their LS equal to the maximum EF of all immediate predecessors.

E$)$ All activities on the critical path have their ES equal to their LF$.$

Group of answer choices