Pirmin's Bike Shop is behind on a custom bike and needs to crash 8 hours of time from the 8-step project. Suppose Pirmin calls the customer and asks for a project extension, reducing the amount of time he needs to crash. Activity Normal Duration (hours) Normal Cost ($) Crash Duration Crash Cost ($) Immediate Predecessors (hours) A 2 10 1 17 B 3 15 2 23 A C 5 25 4 30 B D 3 20 1 24 C E 6 30 4 45 C F 2 40 1 60 E G 7 35 6 50 H 10 50 80 F D,G a. What is the critical path? [Select] b. What is the project length? [Select] c. Which activity should the bike shop crash first [Select] , and how much would it add to the project cost? [Select] d. Which activity should be crashed next to reduce an additional hour off the project project by 2 hours) [Select] [Select] , and what would be the total cost? (reducing the e. Which activity(s) should be crashed next if you needed to reduce the project by another 2 hours (total 4 hours) and what would be the total cost for the 4 hour reduction [Select]