The network below represents a project being analyzed by the critical path method.Activity durations areA= 5, B = 2, C = 12, D = 3, E = 5, F = 1, G = 7, H = 2, l = 10. and J = 6. .'Ei 'Slani '. , .1 l (a) What task must be on the critical path, regardless of activity durations? (b) What is the ES, EF time of activity I? (c) What activities are the immediate predecessor for activity H? (d) What is the duration of path ABE-HJ? (e) What activities form the critical path? (f) What is the length of the critical path? (9) What is slack time at activity H? (h) If activity C was delayed by six time units, what would happen to the project duration? Explain why