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QUESTION 4 You have prepared the project information that is given below: Activity Predecessor Crash Cost Crash Time Normal Cost Normal Time 3 6 30 11 40 70 40 30 - O 3 60 MO A 10 6 | | 20 50 60 B 50 80 90 WAN C D, E, F 50 70 What is the normal critical path? What is the normal project duration? What is the normal project cost? List the critical path(s) and cost to reduce the duration by 1 day. (Show all steps to reduce the duration incrementally)