Activity Immed. Pred. Time (weeks) 5 A 10 B A 8 A 6 D B E B, C 7 4 F 4 D, E, and F a. Determine the critical path and the earliest completion time, in weeks, for the project. b. For the data shown below, reduce the project completion time by three weeks. Assume a linear cost per week shortened and show, step by step, how you arrive at your schedule and document the increased cost. Activity Normal Time Crash Time A 5 10 B 8 7 Normal Cost $7,000 12.000 5,000 4,000 3,000 6,000 7,000 Crash Cost $13,000 18,000 7,000 5,000 6,000 7.000 9,000 D 6 5 E 7 6 F 4 G 4