The logical topology of the network is shown in the figure. Regarding the transmission of IPv6 routes between two devices, which of the following statements is wrong?

An engineer used two routers to test IPv6 services, and simulated the interconnection between headquarters and branches by running BGP4+.

The logical topology of the network is shown in the figure. Regarding the transmission of IPv6 routes between two devices, which of the following statements is wrong?
A . When routing, the Next_Hop attribute must be an IPv6 global unicast address
B . BGP4+ transmits routing information between peers through Update messages
C . If the Update message carries the MP_REACH_NLRI attribute, it means that the advertised route is reachable
D . When routing, it will carry AS_Path and other recognized mandatory attributes

Answer: A