please solve clearly

5. Consider the following project network, with task duration data provided: finish 72 start Please answer the following questions, based on your analysis of this diagram. a) What is the critical path through this network? b) What is the completion time for this project? c) What is the slack in activity A? d) All tasks longer than one day can be crashed to as little as one day, although prices vary. Task B costs $500 per day to crash, while Task I costs $300 per day and H costs $150 per day and all other eligible tasks cost $100 per day of crashing. Which tasks should be crashed to shorten this project to 12 days in length? How much will this cost