Answer the following questions using the network diagram.

$\backslash$table$[[$Activity$,\backslash$table$[[$Immediate$],[$Predecessor$]],$Activity time$],[$A$,$None,$5],[$B$,$None,$2],[$C$,$B$,7],[$D$,$A C$,2],[$E$,$B$,6],[$F$,$D$,6],[$G$,$E$,5]]$

a$.$ Calculate the Forward and Backward passes of each activity.

b$.$ Determine the Critical Path of the Project.

c$.$ Determine the Project Completion Time.

d$.$ Calculate the Slack value of each activity.