A Project Is Represented by the Activity Durations (Estimated at 90

Multiple Choice

A project is represented by the activity durations (estimated at 90% likelihood of completion) and precedence requirements shown in the table.What is the length of the project buffer if this project is managed using critical chain methodology? $\begin{array}{|l|l|l|l|l|l|}\hline \text { Activity } & \text { Predecessor } & \text { Length } & \text { Activity } & \text { Predecessor } & \text { Length } \\\hline \mathrm{M} & - & 8 &\mathrm{R} & -- & 12 \\\hline \mathrm{N} & - & 8 & \mathrm{~S} & \mathrm{P} & 14 \\\hline \mathrm{P} & \mathrm{M} & 12 & \mathrm{~T} & \mathrm{R}, \mathrm{Q} & 7 \\\hline \mathrm{Q} & \mathrm{N} & 10 & \mathrm{~V} & \mathrm{~S}, \mathrm{~T} & 11\\\hline \end{array}$

A) 13.5
B) 22.5
C) 11.25
D) 9.0