Draw the network diagram (with activity on node - AON) with the following precedence requirements and time. Calculate slack time for each activity (by calculating early start and early finish time, and late start and late finish time) and Identify critical path. (a) Construct the project network for completing this project (Activity on node-AON). (b) Find the earliest start (ES), late start (LS), earliest finish (EF), and late finish (LF) and slack for each activity. Use the Table given below to calculate slack for each activity. Use this information to determine which of the paths is a critical path. (c) List the activities that you will select for expediting the project completion. (d) Which activities could be delayed without delaying the entire project completion time