Draw the AON and find the critical path

Task start Predecessors start start start c.E,G.H Optinfistic 39.6 21.7 13.2 21.4 28.3 15 30.2 34.2 39.7 32.9 Most Likely 41.3 42.3 21.3 27.7 28.5 28.6 35.3 36.8 59.6 33.7 Pessimistic 51.7 312 31.6 50.2 67.1 61.2 68.8 35.8 CCPM Point Estimate 46.07 46.32 26.53 30.1 38.09 49.87 47.84 65.79 31.71