Pirmin's Bike Shop is behind on a custom bike and needs to crash 8 hours of time from the 8-step project. Given the project table below calculate the crash cost for 8 hours of time-savings. Suppose Pirmin calls the customer and asks for a project extension, reducing the amount of time he needs to crash. ActivityNormal Duration (hours)Normal Cost ($)Crash Duration (hours)Crash Cost ($)Immediate Predecessors
A21020-
B315223A
C525430B
D320124C
E630445C
F1510C, E
G735650F
H1050780D, G
a. What is the critical path? [ Select ] ["A, B,C, F,G, H", "A, B,C, D,E, F,G, H", "A, B,C, E,F, G,H", "A, B,C, D,H"]

b. What is the project length? [ Select ] ["34 Hours", "23 hours", "35 hours", "15 hours"]

c. Which activity should the bike shop crash first [ Select ] ["E", "D", "C", "B"] , and how much would it add to the project cost? [ Select ] ["$2", "$10", "$7.50", "$5"]

d. Which activity should be crashed next to reduce an additional hour off the project [ Select ] ["C", "E", "NONE", "D"] , and what would be the total cost? (reducing the project by 2 hours) [ Select ] ["$12.50", "$14.50", "$5", "$15.75"]