Please answer the following:

$($a$)$

Develop a project network.

$($b$)$

Develop an activity schedule.

$($c$)$

What are the critical activities? $($Enter your answers as a comma$-$separated list.$)$

What is the expected project completion time $($in weeks$)?$

weeks

$($d$)$

Assume that the company wants to complete the project in six months or $26$ weeks. What is the amount of crash time $($in weeks$)$ for each activity that minimizes cost?

$($A$,$ B$,$ C$,$ D$,$ E$)=$

$($e$)$

Develop an activity schedule for the crashed project.

$($f$)$

What added project cost $($in thousands of dollars$)$ is required to meet the six$-$month completion time?

thousands of dollars