In Cisco IOS-XR, the maximum-prefix command, to control the number of prefixes that can
be installed from a BGP neighbor, is configured under which configuration mode?

A.
RP/0/RSP0/CPU0:P2(config-bgp)#

B.
RP/0/RSP0/CPU0:P2(config-bgp-af)#

C.
RP/0/RSP0/CPU0:P2(config-bgp-nbr)#

D.
RP/0/RSP0/CPU0:P2(config-bgp-nbr-af)#

Explanation:
http://www.cisco.com/en/US/tech/tk365/technologies_configuration_example09186a008010a28a.
shtml