A project network is shown below. Use a forward and a backward pass to determine the critical path, and then fill out the table below.

Activity	Precedence Activities	Activity Time (weeks)
A	--	5
B	--	4
C	--	8
D	A, B	4
E	C	12
F	C	10
G	D, E	3
H	E	2
I	E, F	5

• What is the ES, EF, LS, and LF for activity I?

	A.	ES = 20, EF = 25, LS = 21, and LF = 26
	B.	ES = 20, EF = 23, LS = 21, and LF = 25
	C.	ES = 20, EF = 25, LS = 20, and LF = 25
	D.	ES = 17, EF = 22, LS = 18, and LF = 23