What is the minimum cost of crashing the following project that Roger Solano manages at Slippery Rock University by $4$ days?

$$

Activity

Normal Time$($days$)$

Crash Time$($days$)$

Normal Cost

Total Cost with Crashing

Immediate$$ Predecessor$($s$)$

A

$5$

$4$

$$800$

$$1,100$

$$

B

$8$

$6$

$$250$

$$400$

$$

C

$4$

$3$

$$600$

$$650$

$$

D

$6$

$4$

$$750$

$$1,500$

A

E

$8$

$5$

$$1,200$

$$1,650$

C

Part $2$

By how many days should each activity be crashed to reduce the project completion time by $4$ days? Fill in the table below. $($Enter your responses as whole numbers.$)$