The following table lists the tasks in a project and the time duration for each task:
|
Task
|
Preceding task
|
Normal duration
(in weeks)
|
|
A
|
–
|
16
|
|
B
|
–
|
20
|
|
C
|
A
|
8
|
|
D
|
A
|
10
|
|
E
|
B, C
|
6
|
|
F
|
D, E
|
12
|
The critical path, the project duration and the free float for activity A are, respectively
(a) A-C-E-F; 42 weeks and 0 week
(b) B-E-F; 42 weeks and 1 week
(c) B-C-D-F; 50 weeks and 2 weeks
(d) A-C-E-F; 50 weeks and 0 week