You have been assigned as a project manager for a small project. The extracted activities from the work breakdown structure are shown in the table below. 1. Determine the duration of the project. 2. Determine the critical path. 3. Determine the slack for each activity. Activity Description Expected completelon Time Predecessor activity 1 2 3 4 Kick-off meeting Site preperation Fences and barriers Excavation Foundation Walls Ceilings Columns Closure 5 6 14 14 1 1 2 2,3 4 5 7 6 7 6,8 8 7 5 8 9 6,7,8 Calculation and network representation should be provided