Given the network below and the activities' three-time estimates, answer the following questions: Activity A 0/0/0 Activity B 18/30/72 Activity C 45/61/131 Activity D 24/36/90 Activity E 12/18/48 Activity F 6/15/54 Activity G 0/0/0 a. If the contract for a project is 120 days, what is the chance (in percent) of meeting the schedule? b. Assume the owner delays the job start by 5 days. What is the probability (in percent) that the project will still finish at the originally scheduled completion date? c. What is the probability (in percent) of not meeting the original schedule? d. What is the probability (in percent) of completing the project in 90 days? e. What is the project completion date with at least a 90% confidence level?