Which statement is correct based upon the following output from the show command on
RT1?

A.
OSPFv3 establishes neighbor adjacencies by using global IPv6 addresses.

B.
OSPFv3 establishes neighbor adjacencies by using Link-local addresses.

C.
RT1 owns a subnet mask of 64 bits.

D.
OSPFv3 establishes neighbor adjacencies by using IPv4 addresses.

Explanation:
The point of this question is the OSPFv3.
As shown information, we notice that the router with both ipv6 address and ipv4 address and
both of them are in ospf prosess, so in OSPFv3, we can find that, the DR BDR address are
all link local address, so in OSPFv3 it establist neighbor with link local address.