Activity	Immediate Predecessors	Time Required (weeks)
A	Start	3
B	Start	4
C	A, B	3
D	B	5
E	C	4
F	D, E	3

For the project described by the above table do the following:

(a) Draw the network diagram

(b) Using Earliest Start / Earliest Finish, and Latest Start / Latest Finish, find the critical path. Clearly indicate the sequence of activities on the critical path and compute the length of the critical path.