Question 1 [15 marks] Study the network diagram and answer the following questions. Please motivate all your responses A D 19 E START (FINISH N K F 16 4 a. By how many weeks can Activity B slip before it becomes a second critical path? b. Which activities are on the critical path and what is the length? C. What is the impact on the end date if Activity I slips by 6 weeks? d. What is the impact on the end date if Activity F slips by 5 weeks? e. What is the impact on the end date if Activity B cannot start until a month from now because of late delivery of raw materials