$5.$ Use a Scheduled Graph to level load the following PERT diagram

$($people$)$

Act Imm Pred Time Resources

A

$-$

$2$

$1$

B

$-$

$3$

$3$

C

$-$

$2$

$2$

D

B

$5$

$1$

E

A$,$D

$3$

$1$

F

B

$2$

$1$

G

C

$4$

$2$

a$.$ What is the critical path?

b$.$ How many people can you keep employed for the duration of this project?