The Diagram Below Shows the Activities on the Nodes, and the Table

Multiple Choice

The diagram below shows the activities on the nodes, and the table shows the normal time and crash time (in days) and cost for each activity.

$$\begin{array} { | c | c | c | c | } \hline \text { Activity } & \text { Normal Time } & \text { Crash Time } & \begin{array} { c } \text { Cost per day } \\\text { to crash }\end{array} \\\hline \text { A } & 6 & 6 & - - - \\\hline \text { B } & 10 & 8 & \$ 100 \\\hline \text { C } & 5 & 4 & \$ 300 \\\hline \text { D } & 4 & 1 & \$ 700 \\\hline \text { E } & 9 & 7 & \$ 500 \\\hline \text { F } & 2 & 1 & \$ 650 \\\hline\end{array}$$
-Which activity should be crashed to reduce the project completion by 2 days?

A) Crash activity B by 1 day and Activity C by 1 day.
B) Crash activity E by 2 days.
C) Crash activity C by 1 day and activity E by 1 day.
D) Crash activity B by 2 days.