A Project Is Represented by the Activity Durations (In Days,estimated

Multiple Choice

A project is represented by the activity durations (in days,estimated at 90% likelihood of completion) and precedence requirements shown in the table.How many project buffers are needed if this project is managed using critical chain methodology? $$\begin{array} { | l | l | l | l | l | l | } \hline \text { Activity } & \text { Predecessor } & \text { Length } & \text { Activity } & \text { Predecessor } & \text { Length } \\\hline \text { A } & - & 18 & \text { E } & \text { C, D } & 13 \\\hline \text { B } & - & 16 & \text { F } & \text { C } & 9 \\\hline \text { C } & \text { A } & 22 & \text { G } & \text { E, F } & 15 \\\hline \text { D } & \text { B } & 14 & & & \\\hline\end{array}$$

A) 0
B) 1
C) 2
D) 3