$\backslash$table$[[$Activity$,\backslash$table$[[$Duration$],[($Days$)]],\backslash$table$[[$Immediate Predecessor$],[$Activities$]]],[$A$,2,-],[$B$,3,-],[$C$,4,$A$],[$D$,5,$A & B$],[$E$,8,$C & D$],[$F$,3,$D$],[$G$,2,$F$],[$H$,3,$G$]]$ Using the following information, create a project network diagram. Calculate, ES$,$ EF$,$ LS and LF for each activity, and highlight the critical path indicating the length of this project. Please provide formula also on how to calculate es $,$ ef$,$ ls$,$ and lf