$\backslash$table$[[$Task$,\backslash$table$[[$Immediate$],[$predecessor $($s$)]],\backslash$table$[[$Normal time$],[($Weeks$)]],\backslash$table$[[$Normal cost$],[()]],\backslash$table$[[$Crash time$],[($Weeks$)]],$Crash Cost $()],[$A$,-,3,18,000,2,19,000],[$B$,-,8,600,6,1,000],[$C$,$B$,6,10,000,4,12,000],[$D$,$B$,5,4,000,2,10,000]]$

$\backslash$table$[[$E$,$A$,13,3,000,10,9,000],[$F$,$A$,4,15,000,4,15,000],[$G$,$F$,2,1,200,1,1,400],[$H$,$C$,$E$,$G$,6,3,500,4,4,500],[$I$,$F$,2,7,000,1,8,000]]$

Mr$.$ Brown is the project manager for the Nightingale project $($code name given for the development of the handheld electronic medical reference guide$).$ Mr$.$ Brown with his team has listed down the activities required to complete the project, with their predecessors and details of the cost and duration. However, the management has imposed a deadline of $17$ weeks for completion of the nightingale project. Under such scenario which activities would Mr$.$ Brown decide to crash, and what would be the additional cost? Also, which activities will become critical after crashing? Construct the network diagram