Following successor relationshos are walable for a project. What is the duration of the project?

$\backslash$table$[[$Activity $10,$Duration$($days$),$Successors$],[$A$,5,$G$],[$B$,12,$C$.$D$],[$C$,6,$D$.$F$],[$D$,8,$E$],[$E$,12,$F$],[$F$,3,]]$

a$.22$ ders

b$.26$ days

c$.40$ days

d$.45$ dsys