Problem 2 A farm owner is going to erect a maintenance building with a connecting electrical generator and water tank. The activities, activity descriptions, and estimated durations are given in the following table: Activity Activity Predecessor Activity Duration (weeks) a b d Activity Description Excavate Erect building Install generator Install tank Install maintenance equipment Connect generator and tank to building Paint finish Check out facility 2 6 4 2 4 5 3 a a b b,c,d b e f to. ef a. Draw a complete network for the above problem. b. Determine the critical path and the expected completion time. c. Develop the detailed activity schedule for the project (provide a table giving ES, EF, LS, LF, and Slack)