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:

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.$)$

What is the total slack for the non critical path$($s$)$ in the project? $5$ week$($s$)($Enter your response as a whole number.$)$