There are four parallel, paths on a network diagram. The summer duration d each path is below:
A, C, G: 10 weeks
A, B, F: 8 weeks
D, E, H: 12 weeks
D, B, F: 7 weeks
Which of the following tasks are on the critical path?

A.
A, C, G

B.
A, B, F

C.
D, E, H

D.
D, B, F