A local political campaign must coordinate a number of necessary activities to be prepared for an upcoming election. The following table describes the relationships between these activities that need to be completed, as well as estimated times. Activity Immediate Predecessors Time (weeks) A 4 B 6 A 3 D A 4 E , 8 F B 7 G DE 2 H F 1 a. Develop a project network for this problem. b. Determine the EST, EFT, LST LET, and slack for each activity Also determine the total project completion time and the critical path(s)