$\backslash$table$[[$Activity$,$Activity Time $($days$),$Immediate Predecessor$($s$)],[$A$,7,-],[$B$,5,$A$],[$C$,3,$A$],[$D$,3,$B$,$ C$],[$E$,5,$D$],[$F$,3,$E$],[$G$,6,$E$]]$

a$.$ Choose the correct network diagram for this project.

A$.$

$$ B$.$

$.$

c$.$

$$ D$.$

$$

$$

b$.$ Determine the critical path and project duration.

The critical path is path $$ and the project duration is $$ days. $($Enter your response as an integer.$)$