Sue Smith is developing a six$-$sigma quality certification program for managers. Smith has listed a number of activities that must be completed before a certification of this nature could be conducted. The activities, immediate predecessors, and times appear in the accompanying table:

Activity Predecessor Time $($Days$)$

A $-2$

B $-5$

C $-1$

D C $10$

E A$,$B $3$

F D $6$

G E$,$F $8$

a$.$ What is the critical path?

C$,$ D$,$ F$,$ G

b$.$ What is the total project completion time?

$25$ days

c$.$ How much slack is there in activity E$.?$

$9$ days

d$.$ What is the ES$/$EF and LS$/$LF for activity E$?$

$5$ and $8$; $14$ and $17$

e$.$ What if activity B$.$ was delayed by $10$ days, what would be the project length and critical path?

$[$ Select $]$