A project for improving a billing process has the following precedence relationships and activity times:

Activity	Activity Time (weeks)	Immediate Predecessor(s)
A	55
B	99
C	55	A
D	1414	B, C
E	1111	B
F	55	D
G	44	E
H	99	F, G

a. Choose the correct network diagram below.

b. Calculate the slack for each activity. Which activities are on the critical path?

	Activity Time (daydays)	Start (daydays)		Finish (daydays)		Critical Path	Slack (daydays)
Activity		Earliest	Latest	Earliest	Latest
A
B
C
D
E
F
G

.