(e) MCFI Ltd is setting up a new plant in Indonesia. The Project Manager is proposing to use the Critical Path Method in order to monitor the various activities constituting the project. The various activities, precedence relationships and duration of each activity are indicated in the table below: Activity Completion time (weeks) A B CDE FGH 1 4 2 6 2 5 3 6 I 1 The immediate precedence relationships are: Activity Activity A must be finished before C can start B D,E,F C E,F D G E H F.G I (i) Draw the network diagram for the above project. (4 marks) (ii) Calculate the earliest start time, earliest finish time, latest start time, latest finish time and float for each activity. (10 marks) (iii) Identify the critical path and calculate the project completion time. (2 marks) (iv) How would the overall project completion time be affected if the completion time for activity F is increased from 5 to 7 weeks and that for activity H is decreased from 6 to four weeks? (5 marks)