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$1$ point

$\backslash$table$[[$activity predecessors normal$\_$time,crash$\_$time,normal$\_$cost crash$\_$cost$],[$A$,,3,1,4500,12500],[$B$,$A$,6,2,3000,13000],[$C$,$B$,2,1,2500,6000],[$D$,$C$,3,1,3000,5000],[$E$,$B$,6,4,4500,7500],[$F$,$E$,5,4,5000,8000]]$

The table shows normal time, crash time, normal cost, crash cost of activities in a project. According to this table which activity must be crashed first? $($Only enter the name of the activity. Lower or uppercase both work. Ex: A or a$.$ Copyrighted content. Cannot be posted. @orsdemir$)$

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