Given the following information for an AOA network:

$\backslash$table$[[,,$Immediate$],[$Activity$,$Duration $($days$),$Predecessor$($s$)],[$A$,4,$none$],[$B$,2,$A$],[$C$,7,$none$],[$D$,4,$A$],[$E$,5,$B$,$C$,$D$]]$

What is the value of critical length in this AOA network? Keep your own AOA graph.

Select one:

a$.13$ days

b$.12$ days

c$.14$ days

d$.16$ days $.$

e$.15$ days