A project is represented by the following diagram:

1. The expected duration of this project is:

A.12

B.17

C.20

D.36

E.77

2. The critical path for the network shown is:

A. a-c-g.

B. a-d-f-g.

C. a-d-h-i.

D. b-e-f-g.

E. b-e-h-i.

a, 4 c. 3 d, 5 2 h, 1 86 i, 3