A$3)$ Use the data of the following table and draw a freehand Critical Path Method $($CPM$)$ diagram. Calculate the following values and present your answers clearly on the network. Also indicate the critical path on your network.

$[20]$

a$)$ The earliest start time for each activity

b$)$ The latest acceptable completion time for each activity

c$)$ The total float for each activity

TABLE $1$

$\backslash$table$[[$Activity$,$Precessor,Duration $($weeks$)],[$A$,-,2],[$B$,-,4],[$C$,$B$,6],[$D$,$A$,8],[$E$,$C$,$D$,10],[$F$,$E$,2],[$G$,$F$,4],[$H$,$D$,6],[$I$,$E$,$F$,8],[$J$,$G$,10]]$