Consider the Following Work Breakdown Structure What Is the Estimated Expected (Mean) Time for Project Completion

Multiple Choice

Consider the following work breakdown structure: $\begin{array}{cccccc}&\text { Start }&\text { Finish }&&\text { Duration (Days) } \\\text { Activity } & \text { Node } & \text { Node } & \text { Optimistic } & \text { Most Likely } & \text { Pessimistic } \\\hline \text { A } & 1 & 2 & 41 & 50 & 59 \\\text { B } & 1 & 3 & 54 & 60 & 66 \\\text { C } & 2 & 4 & 58 & 70 & 82 \\\text { D } & 3 & 4 & 32 & 41 & 44\end{array}$ What is the estimated expected (mean) time for project completion?

A) 41 days
B) 70 days
C) 100 days
D) 120 days
E) 221 days