Consider the following data for a project to install a new server at the Northland Pines High School:

$\backslash$table$[[$Activity$,$Activity Time $($days$),$Immediate Predecessor$($s$)],[$A$,4,-],[$B$,5,$A$],[$C$,6,$A$],[$D$,4,$B$],[$E$,1,$B$],[$F$,7,$B$,$ C$],[$G$,3,$D$,$ E$],[$H$,4,$F$],[$I$,3,$F$],[$J$,7,$G$,$ H$,$ I$]]$

a$.$ Choose the correct network diagram below.

A$.$

B$.$

c$.$

D$.$

b$.$ Calculate the critical path for this project.

The critical path is A$-$C$-$F$-$H J and the project duration is $28$ days. $($Enter your response as a whole number.$)$

c$.$ How much slack is in each of the activities $G,H,$ and I $?$

$\backslash$table$[[$Activity$,\backslash$table$[[$Activity$],[$Time $($days$)]],\backslash$table$[[$On$],[$critical path?$]],\backslash$table$[[$Slack$],[($days$)]]],[$G$,3,$No$,],[$H$,4,$Yes,$],[$I$,3,$No$,]]$

PLEASE HELP WITH PART C