You have a device with a MAC address of a$8-$d$2-34-$c$9-$de$-7$f$.$ What will be the automatically generated link$-$local address?

fe$80$:::a$8$d$2$:$34$c$9$:de$7$f

$2001$::a$8$d$2$:$34$ff:fec$9$:de$7$f

fe$80$::aad$2$:$34$ff:fec$9$:de$7$f

ff$02$: :aad$2$:$34$ff:fec$9$:de$7$f