Given the following network:

a$)$ find the earliest time the project will be completed.

b$)$ find the critical path

c$)$ if activity I is delayed by $5$ days, find the completion time of the entire project.

Activity t

A $10$

B $6$

c $11$

D $8$

E$.7$

F$.11$

G$.10$

H$.5$

I. $10$