c) Calculate the project duration. 32. In the following table, project activities in days are listed with three time estimates for duration in days and prede- cessors for the activities. Most Optimistic Likely Pessimistic ActivityTime Time Time Predecessors 12 10 19 12 18 10 a, b c, d , e 12 14 12 (a) Calculate the expected time of each activity using MSP (b) Construct a Gantt chart using MSP. (c) Use MSP to draw a network diagram. (d) Assuming a 5-day workweek, calculate the critical path of the project. (e) Calculate the slack for the activities