show the full workout please:

Download e. A-B-C-D-E; 22 d (Project management techniques: PERT and CPM, difficult) (AACSB: Analytic Skills 41. The critical path for the network activities shown below is with duration Activity Duration Immediate Predecessors A B D E 2 A4 6 1 2 A,B A,B B,C,D a. A-D-E; 5 b. B-E; 6 c. B-D-E: 7 d. A-C-E; 10 c. B-C-E; 12 e (Project management techniques: PERT and CPM, difficult) (AACSB: Analytic Skills) TI distribution is used by PERT analysis to calculate expected activity times and variances