I only need the answer for d$.$ please

Schedule the following activities using CPM:

b$.$ What is the critical path?

A$-$B$-$D$-$F$-$G$-$H

A$-$B$-$D$-$E$-$H

A$-$C$-$E$-$F$-$G$-$H

A$-$C$-$E$-$H

c$.$ How many weeks will it take to complete the project?

d$.$ Which activities have slack, and how much?

B$,2$ weeks; D$,1$ week; E$,4$ weeks.

A$.4$ weeks; B$,1$ week; D$,2$ weeks.

C$.2$ weeks; F$,2$ weeks; G$,2$ weeks.