Use These Activity Durations (That Have Been Estimated at 90%)and

Use these activity durations (that have been estimated at 90%)and precedence requirements to create two project schedules-a traditional schedule based on early start times and a critical chain schedule with buffers.
$\begin{array}{|l|l|l|}\hline \text { Activity } & \text { Time } & \text { Predecessor } \\\hline \mathrm{A} & 8 & \\\hline \mathrm{B} & 15 & \\\hline \mathrm{C} & 19 & \mathrm{~B} \\\hline \mathrm{D} & 12 & \mathrm{C} \\\hline \mathrm{E} & 3 & \mathrm{C} \\\hline \mathrm{F} & 16 & \mathrm{~A} \\\hline \mathrm{G} & 12 & \mathrm{~F} \\\hline \mathrm{H} & 16 & \mathrm{E} \\\hline\mathrm{R} & 7 & \mathrm{D} \\\hline \mathrm{J} & 16 & \mathrm{G}, \mathrm{H} \\\hline \mathrm{K} & 12 &\mathrm{R} \\\hline \mathrm{L} & 8 & \mathrm{J}, \mathrm{K} \\\hline\end{array}$