Use the below project info to answer the questions. IMMEDIATE PREDECESSORS ACTIVITY A B P NORMAL TIME (WEEKS) 2 4. 8 6 7 4 5 Non NORMAL COST $ 50 80 70 60 100 40 100 CRASH TIME (WEEKS) 1 2 4. 5 6 3 CRASH COST $ 70 160 110 80 130 100 150 A A B D C, E, F a. What is the critical path when using normal activity times? O A-C-F-G A-D-E-G O A-D-F-G O A-B-E-G b. Fill in the table to specify the crashing steps needed to minimize the cost of crashing to various project durations. Use project lengths of 18, 17, 16, 15, 14, and 13 weeks. For each project length, identify the length of each of the corresponding paths, specify which activity would have been crashed to achieve that project length (duration 18 is the starting point, so no activity needed to be crashed), and calculate the crashing and total costs as shown in the table below. (Leave no cells blank - be certain to enter "O" wherever required.) 18 Weeks 17 Weeks 16 Weeks 15 Weeks 14 Weeks 13 Weeks Project Duration: Length of path ABEG Length of path ACG Length of path ADFG Activity crashed Crash cost for this step Cumulative crash cost Total direct cost c-1. Suppose for each project length the indirect costs are $400 (18 weeks), $350 (17 weeks), $300 (16 weeks), $250 (15 weeks), $200 (14 weeks), and $150 (13 weeks), then what is the total project cost for each length? Duration Total Costs 18 17 16 15 14 13 c-2. Indicate the minimum total project cost length. 13 weeks O 14 or 15 weeks O 16 or 15 weeks O 17 weeks