Consider the project information in the table:

Activities Duration $($days$)$ Immediate Predecessor$($s$)$

A $6----$

B $2----$

C $3$ A

D $5$ A

E $3$ A

F $2$ C

G $3$ E

H $4$ B$,$E

I $2$ H

J $2$ F$,$G$,$I

a$.$ What is the slack in task F $?(4$ points$)$

b$.$ Suppose the project has just been started. What is the longest you could delay beginning work on activity A without delaying the completion of the project? $(3$ points$)$

c$.$ What is the earliest that activity G can be completed? $(4$ points$)$

d$.$ What is the most likely that activity D can be delayed without delaying the project? $(4$ points$)$