Referring to the partial Cisco IOS-XR BGP configuration exhibit, when trying to commit this
configuration, the following error is displayed:
% Failed to commit one or more configuration items during a pseudo-atomic operation. All
changes made have been reverted. Please issue ‘show configuration failed’ from this session to
view the errors. 
What is wrong with the configuration?
A.
IPv6 unicast routing has not been enabled globally using the ipv6 unicast-routing command
B.
The configuration is missing the required network command
C.
The update-source loopback 0 commands must be configured under the respective neighbor
address-family
D.
The configuration is missing the address-family ipv4 unicast and address-family ipv6 unicast
commands under router bgp 65111
Explanation: