In a PERT Network, You Are Given the Following Data

In a PERT network, you are given the following data with times in weeks. $\begin{array}{ccccc}\text { Activity } & \text { Immediate } & \text { Optimistic } & \text { Most Likely } & \text { Pessimistic } \\& \text { Predecessors } & \text { Time } & \text { Time } & \text { Time }\\\text { A } & -- & \text { G } & 11 & 13 \\\text { B } & -- & 4 & 9 & 20 \\\text { C } & \text { A } & 2 & 11 & 14 \\\text { D } & \text { A, B } & 5 & 6 & 13 \\\text { E } & \text { D } & 3 & 6 & 11 \\\text { F } & \text { C, D } & 9 & 10 & 11 \\\text { G } & \text { E }, \text { F } & 7 & 20 & 21\end{array}$
A.What is the critical path?
B.What is the probability the project will be completed within one year (52 weeks)?

C.Which activity has the most slack?