Question Completion Status: D G QUESTION 18 The following table of probabilistic time estimates (in weeks) and activity predecessors are provided for a project. Activity Immediate Predecessor Optimistic Time Most Probable Time 11 3 6 10 A, в 6 Pessimistie Time 14 9 14 7 11 D, E F 4 3 13 б 9 Table 1 Reference: Ref 1 Using Table 1, the variance of the project's total completion time is approximately O A. 1.36 • B. 1.78 C. 2.03 • D. 4.14 • E. None of the above