A project with 9 activities is shown. Duration Immediate Activity (days) Predecessor A 3 none, B 2 none, C 5 A, B, D 7 A, B, E 2 B , F ,1 ,C, G 6 D, H 6 D, F, K 3 E, G, H. Perform the forward and backward passes of CPM. Identify critical activities. Identify critical path(s). What is the slack of activity E? What is the slack of activity G?