Given the following information (time is in weeks): Activity Immediate Predecessor Normal Time Crash Time Crash Cost 2 3 2 4 A B D E F G H I J A A A B, E D H F, G 3 5 4 7 6 2 5 4 3 3 Normal Cost 200 300 500 400 700 600 300 500 400 200 4 1 300 500 800 850 1,100 1,000 400 700 800 375 4 3 1 2 a) Construct the project network. [10 pts] b) Determine the critical path. [10 pts] c) Crash the project to fifteen weeks. [15 pts]