In a simple PERT Project network, three tasks A, B and C must be completed. A must be finished before B and B must be finished before C. A’s three task time estimates = (2, 5, 8); B’s three task time estimates = (7, 10, 13); C’s three task time estimates = (4, 7, 10). Which of the following statements is true?
A. The project completion time is on average 22.
B. The project completion time is normally distributed with a mean of 17 and a standard deviation of SQRT(2).
C. The project completion time is distributed according to a Weibull distribution.
D. The project completion time is 45.