Problem 5 (20%) Jet Cycle is a new custom-designed mountain bike from Surfside Bike. An analysis of the task of building the Jet Cycle reveals the following list of relevant activities, their duration, and their immediate predecessors (column 1, 2, 6 respectively). Activity A B D E F G H Normal Duration (hours) 2 3 5 3 6 1 Normal Cost (1000 Rp) 100 150 250 200 300 50 350 500 Crash Duration (hours) 2 2 4 1 4 1 6 7 Crash Cost (1000 Rp) 0 230 300 240 450 0 500 620 Immediate Predecessors None A B CE F D G 7 10 a. Draw the network diagram and find which activities form the critical path? b. What is the shortest time to finish the project? c. Surfside Bike is behind on a custom bike and needs to crash 6 hours of time from this 8-step project. Given the crash project table above (column 3 to 5), calculate the crash cost for 6 hours of time-savings. d. Suppose Surfside Bike calls the customer and asks for a project extension, reducing the amount of time he needs to crash. Surfbike has a Rp.200.000 crash budget. Is the budget sufficient to crash 4 hours of time