Refer to the exhibit.

You have just configured R5 and R6 to run EIGRPv6 as shown; the IPv6 ping from R5 to R6-
loopback 0 is failing. Which statement could be the reason?

A.
The loopback interfaces on R5 and R6 must be configured on an EIGRPv6 As number other
than 56.

B.
The loopback interfaces on R5 and R6 must be configured to EIGRPv6 As number 56.

C.
You need to configure the EIGRPv6 router process on both routers.

D.
You need to configure the EIGRPv6 router process in at least one of the routers

E.
You should remove the ipv6 eigrp 56 from the loopback interfaces on both routers.