Which two statements are correct about neighbor discovery in IPv6? (Choose two.)
A . Neighbor discovery relies on ARP to find neighbors on a local link.
B . A neighbor is considered reachable when the neighboring device responds to a neighbor solicitation message.
C . A neighbor is considered reachable when the neighboring device responds to a router solicitation message.
D . Neighbor discovery does not use ARP to find neighbors on a local link.
Answer: B,D