There are four parallel paths on a network diagram. The summary duration of 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