What is the earliest completion time for this$$ project?

A$.$

$19$ weeks

B$.$

$18$ weeks

C$.$

$21$ weeks

D$.$

$20$ weeks

$.$

$.$

$.$

Question content area right

Part $1$

Activity

Predecessor

$$Time$($weeks$)$

A

minus$$minus$$

$8$

B

A

$6$

C

minus$$minus$$

$4$

D

C

$9$

E

A

$11$

F

B

$3$

G

$$D$,$E$,$F

$1$