Consider the following tasks, along with their duration and required predecessors. ID Description Precede ID Duration A Complete Foundation - 6 B Connect Plumbing A 6 C Install Drywall A 2 D Paint Interior Walls C 4 E Install Trim Carpentry D 3 F Install Windows A 4 (3 Paint Exterior Walls F 1 H Complete Inspection B, E, G O | Attain Client Approval H 2 J Close Sale | 1 a. Draw the PERT flow, labeling ECT and LCT for each event. Please embed the drawing in this document, either in electronic format such as MS Visio or hand-drawn sketch. b. Determine the critical path time and available slack time