The precedence relations and crew size required to complete a project are given in the following table: Activity Immediate Predecessor(s) Time (weeks) Crew Size A 3 7 -- B A 2 3 C A 4 4 D B 2 4 E C,H 2 3 F 2 2 G D 1 3 H F 3 5 I E 3 7 J H 4 5 a) Construct an early start Gantt chart and identify the critical path. b) Calculate and chart the labor requirements required to complete the project for the schedule you obtained in part a. c) Assume that 10 persons are assigned to work on the project. Use the heuristic discussed in class (starting with the schedule you constructed in part a) to calculate the earliest completion time of the project without exceeding the resource constraint.