The following activities are part of a project to be scheduled using CPM:

$\backslash$table$[[$ACTIVITY$,$IMMEDIATE PREDECESSOR,TIME $($WEEKS$)],[$A$,-,8],[$B$,$A$,5],[$C$,$A$,9],[$D$,$C$,6],[$E$,B,D,4],[$F$,$D$,7],[$G$,E,F,4]]$

b$.$ What is the critical path?

A$-$B$-$D$-$F$-$G

A$-$C$-$D$-$E$-$G

A$-$C$-$D$-$F$-$G

A$-$B$-$E$-$G