Which command is used to configure the external, confederation-wide AS number?
A.
Domain 3(config)#router bgp {as-number}
B.
Domain 3(config-router)#bgp confederation peers {as-number}
C.
Domain 3(config-router)#bgp confederation identifier{as-number}
D.
Domain 3(config-router)#bgp cluster-id{as-number}
E.
Domain 3(config-router)#neighbor {ip address} remote-as {as-number}