The following is a table of activities associated with a project at Rafay Ishfaq's software firm in Chicago, their durations and what activities each must precede:

$\backslash$table$[[$Activity$,$Daration $($weeks$),$Precedes$],[$A $($start$),1,$B$,$ C$],[$B$,2,$E$],[$C$,11,$F$],[$E$,8,$F$],[$F $($end$),2,-]]$

This exercise contains only parts $b,c,$ and $d.$

b$)$ The activities on the critical path are

c$)$ The total project completion time for Rafay Ishfaq's software firm is weeks. $($Enter your response as a whole number.$)$

d$)$ Determine the slack time for each of the activities. $($Enter your responses as whole numbers.$)$

$\backslash$table$[[$Activity$,$Slack Time $($weeks$)],[$A$,],[$B$,],[$C$,],[$E$,],[$F$,]]$

What is the total slack for the non critical path$($s$)$ in the project? week$($s$)($Enter your response as a whole number.$)$