Consider the following project. Activity Predecessor(s) Duration (days) A 4 B 3 A, B 5 B 6 E 4. F D, E 7 G E 6 H F G 4 D, F 2 J GI 3 O A CUI (a) Draw the project network diagram. Use the method discussed in the course, with activities assigned to nodes and the predecessor-successor relationships indicated by the arcs. (b) Develop the project schedule using the critical path method. Indicate the early start, early finish, late start, late finish, and slack for each activity. (c) Identify the critical path and indicate the project duration, in days. (d) Indicate the effect on the project duration if the following delays occur. (i) The completion of activity D is delayed by 2 days. (ii) The completion of activity G is delayed by 2 days. (iii) The completion of activity H is delayed by 2 days