. Activity A B C D E F G H 1 J 2/3 K L Immediate predecessors . . B A.B B F.C G F I.D J E.K 80% Expected Completion Time (week) Optimistic 2 3 2 4 3 1 2 2 1 2 1 4 Most likely pessimistic 4 5 3 DELL 6 4 2 5 a. Show the network for this project using activity-on-arrow method. b. What are the critical path activities and the expected project completion time? c. Show the activity schedule and slack for each activity.. 4 3 3 1 8 6 6 4 10 6 3 7 5 4 8 1 10 Note: there is NO NEED to calculate the mean for estimated duration, instead follow this rule: If your matric number end with an odd number, use optimistic time as your estimated duration If your matric number end with an even number, use pessimistic time as your estimated duration: If your matne estimated duration ber end with a zers, use the most likely time as your