A project for improving a billing process has the following precedence relationships and activity times: Activity Activity Time (weeks) Immediate Predecessor(s) A 5 minus B 7 minus C 6 A D 14 B, C E 11 B F 5 D G 7 E H 7 F, G a. Choose the correct network diagram below. A. SFA5B7D14E11C6F5H7G7 x y graph B. SFA5B7C6E11D14F5G7H7 x y graph C. SFA5B7C6D14G7F5E11H7 x y graph D. SFA5B7C6D14G7F5E11H7 x y graph Your answer is correct. b. Calculate the slack for each activity. Which activities are on the critical path? Activity Activity Time (weeks) On critical path? Slack (weeks) A 5 nothing B 7 No Yes nothing C 6 Yes No nothing D 14 No Yes nothing E 11 Yes No nothing F 5 Yes No nothing G 7 No Yes nothing H 7 Yes No nothing