Paragraph INI An IT software project comprises the following activities, whose time estimates are given against each other as below: Activity Estimated Duration (weeks) Optimistic Most Likely Pessimistic 1-2 3 6 15 1-3 2 14 1-4 6 12 30 2-5 5 8 2-6 11 17 36 15 4-7 9 27 5-7 6-7 A 19 28 a) Find the critical path for the project. (10 marks) [Answer and show workings here]