For the project information given below, $($i$)$ Draw a project network diagram; $($ii$)$ compute ES$,$ EF$,$ LS$,$ LF times, and Slack times; $($iii$)$ Indicate O Critical path in RED colour.

Note: Draw the network diagram on a piece of paper and manually compute the above.

$\backslash$table$[[$ID$,$Description,,Predecessor$],[$A$,$Order review,,None$],[$B$,$Order standard parts,,A$],[$C$,$Produce standard parts,,$2],[$D$,$Design custom parts,,A$],[$E$,$Software development,A$,10],[$F$,$Manufacture custom hardware,A$,13],[$G$,$Assemble,C$.$D$,18],[$H$,$Test,B$.$ F$,15]]$