$\backslash$table$[[$Activity$,$Predecessor,$\backslash$table$[[$Crash Cost$],[($Slope$)]],\backslash$table$[[$Maximum Crash$],[$Time$]],$Normal Time,Normal Cost$],[$A$,$None,$30,1,5,40],[$B$,$A$,60,2,6,50],[$C$,$A$,50,1,4,80],[$D$,$A$,0,0,12,50],[$E$,$B$,70,4,7,100],[$F$,$C$,120,1,3,40],[$G$,$D$,$ E$,$ F$,90,,3,100]]$

Question $7$

The total cost for $19$ time units of project duration is $

$880$

$910$

$850$

$940$