10. The information below represents a project for Sawaya Robotics. Immediate Predecessors Activity Normal Time Crash Time Normal (days) (days) Cost A 6 5 900 B 8 6 300 C 4 3 500 D 5 3 900 E 8 5 1,000 a. Construct the AON network for this project. Crash Cost 1,000 400 600 1,200 1,600 A,B b. Determine the crash cost per period for each activity. 4/ C. List all paths through the network and their normal times. d. What is the critical path and its time? e. Set up a chart (like what we did in class) to determine the minimum cost of crashing the project by four days. (SHOW ALL WORK.)