needed asap ,please

Consider the following scenario: A network consists of the following list. Times are given in weeks. Activity Preceding Optimistic 5 Most Likely 6 D E F G H 9 5 $ 10 3 99! A B C.B DE EE 12 7 7 12 4 4 Pessimistic 15 14 15 9 12 17 5 10 4 Project completion time is 5 points 32 weeks 27 weeks O 29.5 weeks O 25.4 weeks O None of the answers. Expected times of activities A & F are respectively 5 points 7.5& 8.6 10.5 & 12.6 None of the answers. O 5&11 O 587.5 Project variance is the and it is equal to 5 points sum of the variances of all activities; 4.15 O sum of the variances of all activities: 5.14 Osum of the variances of critical path activities: 3.36 O None of the answers. O sum of the variances of critical path activities; 6.14 Projet Standard deviation is equal to 5 points 06.456 - 05123 1.833 3,028 None of the answers O sum of the variances of critical path activities; 5.14 Project Standard deviation is equal to F 5 points O 6.456 05.123 O 1.833 03.028 None of the answers. The probability that the project will be completed within "32 weeks" is equal to 5 points O 91.30% 54.95% None of the answers. O 11.12% O 87.12%