a) Use the following information to construct a network diagram using AON notation.

Activity	Activity time (weeks)	Immediate Predecessors(s)
A	3	None
B	4	A
C	2	B
D	5	B
E	4	C
F	3	D
G	2	E,F

Using the network diagram from problem 1:

b) Calculate the project completion time.

c) Determine which activities are on the critical path.