This question relates to the project described in the network diagram below. B F 2 16 6 8 A 1 3 3 10 9 4 D G H 4 8 7 5 8 11 E 5 10 KEY: Activity Activity number Duration estimate (in weeks) (a) Given that the customer would like the project completed in 30 weeks, complete the table below listing the following values for each activity: earliest start time (ES), earliest finish time (EF), latest start time (LS), latest finish time (LF), total slack (TS). (1 mark) Activity ES EF LS LF TS B D E F G H (b) If you had an activity with a negative value for its slack what does that tell you about the activity and the project completion time? (1 mark) (c) If you had an activity with a positive value for its slack what does that tell you about the activity and the project completion time? (1 mark) (d) Why is it important for the project manager to know which tasks are on the critical path(s)? (1 mark)