Question completion Status: A project manager of the construction project in the Cal Poly Electronics considers three different time estimates shown below: Index Immediate Predecessors B Optimistic (in month) 4 4 6 7 4 Most Likely (In month) 7 9 2 9 5 Pessimistic (In month) 10 14 17 6 D E AB , Calculate slack value for selected activities (fill in multiple blanks Based on the calculation of expected activity times, what is the critical path? What is the expected project completion time? What is the project variance? Early Activity Late Start Late Finish Slack Early Start Finish 0 6 0 11 5 11 5 B a 7 G 11 21 mo 11 16 16 21