d$.$ How many weeks could activity F be delayed without delaying the project?

e$.$ What is the critical path? Enter the activities in capital letters with hyphens $($but no spaces$)$ separating the activities. For example, A$-$C$-$G$.$

ACTIVITY IMMEDIATE PREDECESSOR TIME $($WEEKS$)$

A $11$

B A $12$

C A $9$

D B $5$

E B $10$

F D $9$

G C$,$ E $5$

H F$,$ G $10$

I G$,$ H $9$