$3-$ Given the following network:

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

b$)$ Find the critical path..

c$)$ If activity $C$ is delayed for $5$ days, when the project will be completed?

$\backslash$table$[[$Activity$,t,],[$A$,,7],[$B$,,10],[$C$,,6],[$D$,,8],[$E$,,5],[$F$,,8],[$G$,,10],[$H$,,15],[$I$,,11]]$