4 Following are activities, precedence relationships, and task times for a number of tasks. Task Task Time (days) Preceding Task A 70 None 25 A C 89 None 50 A 46 B,D 72 46 25 30 14 36 H, J 7 J A - I @ mmmoOo o T Gy m & a. Construct a precedence diagram. b. Compute early and late times. c. Compute the slack for each task. d. Which tasks could the project manager delegate