Perform the following tasks using the tabulated project data. Assume indirect costs are $150 for the "normal" network and decrease by $10 per day as the overall project duration is reduced. Direct Costs Normal Crash Time Cost Time Cost Activity Predecessor COAL 4 5 7 6 4 5 6 $10 30 10 20 30 20 50 AB B.C D E 3 3 5 4 3 4 4 $20 50 30 50 45 50 G a. Determine the "all-normal" project duration and total (direct plus indirect) cost. The "all-normal" phrase implies that the schedule and cost are based on the normal time and cost estimates in the table above. b. Determine the "all-crashed" project duration and total (direct plus indirect) cost. The "all-crashed" phrase implies that the schedule and cost are based on the crashed time and cost estimates in the table above. In other words, "all-crash" means that all activities are crashed to the maximum extent possible. c. Begin with the "normal" network and crash critical activities according to the crash ratio until no further reduction in project duration is possible. For each step in the crashing process, identify which activity(ies) is/are being crashed and for how many days. Prepare a table showing the crashing steps to include duration and costs (indirect, direct, and total). What is the shortest possible duration for the project and its associated cost? What is the lowest possible total project cost and its associated duration