Question 4 (1 mark): A project has been subdivided into five activities. Their immediate predecessors, activity durations, and resource consumption are shown in the table below. Activity Immediate Predecessor C A B C D E Duration (in days) 5 4 2 3 2 Resource consumption 20 70 40 90 AE A,B,C (a) Draw the project network. 50 (b) Calculate all earliest and latest starting & finishing times & the total floats of all activities. What is the critical path? What is its duration? (c) Draw the Gantt chart (including the resource requirement graph), assuming that all activities are scheduled as late as possible. What is the largest resource consumption at any point in time during the project