A.EIGRPv6 will form a neighbor relationship.
B.EIGRPv6 will not form a neighbor relationship.
C.EIGRPv6 will form a neighbor relationship， but with the log MSG： "EIGRPv6 neighbor not on a commonsub net."
D.EIGRPv6 will form a neighbor relationship， but routes learned from that neighbor will not be installed inthe routing table.

A. It supports autonegotiation for both ISL and IEEE 802.1Q trunks.
B. It must be disabled on an interface if you do not want the interface to work as a trunk or start negotiation to become a trunk.
C. It is a point-to-multipoint protocol.
D. It is a point-to-point protocol.
E. It is not supported on private VLAN ports or tunneling ports.