An engineer wants to use an address family to configure internal BGP peer 10.1.1.1 as a route reflector client for unicast and multicast prefixes. Which option accomplishes this configuration?

A.	router bgp 140 address-family ipv4 unicast neighbor 10.1.1.1 remote-as 140 address-family ipv4 unicast route-reflector-client exit address-family ipv4 multicast route-reflector-client
B.	router bgp 140 neighbor 10.1.1.1 address-family ipv4 unicast address-family ipv4 multicast remote-as 150 route-reflector-client exit
C.	router bgp 140 address-family ipv4 unicast route-reflector-client address-family ipv4 multicast remote-as 140 neighbor 10.1.1.1
D.	router bgp 140 address-family ipv4 unicast neighbor 10.1.1.1 remote-as 150 address-family ipv4 unicast route-reflector-client exit address-family ipv4 multicast route-reflector-client