This question uses the following example, same as above: A network consists of the activities in the following list. Times are given in weeks. Activity Preceding Time A -- 8 B -- 3 C A 7 D A,B 3 E C 4 F D 6 Draw the network diagram. Calculate the ES, EF, LS, LF, and Slack for each activity. Find the total project completion time. What is the slack of activity E?