Below is the information on a small project. All information is in days and the crash time is the amount of time that the project can be shortened along with the associated cost of crashing.

$\backslash$table$[[$Activity$,\backslash$table$[[$Time$],[$In Days$]],\backslash$table$[[$Immediate$],[$Predecessor$($s$)]],\backslash$table$[[$Possible$],[$Crash Time$],[($Days$)]],$Crash Cost$],[$P$,6,$none,$1,$$$\frac{200}{?}$ Day$],[$L$,3,$none,$2,$$$\frac{100}{?}$ Day$],[$U$,6,$P$,$L$,1,$$$\frac{150}{?}$ Day$],[$N$,7,$U$,1,$$$\frac{300}{?}$ Day$],[$K$,9,$U$,$ N$,2,$$$\frac{500}{?}$ Day$]]$

Hint: In order to be successful in this activity you must draw out the AON diagram on your own in order to best answer the following questions.

Identify the slack in the project.

$3$ days at $1$

$3$ days at $P$

$3$ days at $N$

None of these are correct.

$3$ days at $K$

$3$ days at $L$

Any of these can be correct.