Which minimum configuration is needed for the SAF Internal Client to register with this SAF Forwarder?

A.	router eigrp SAF ! service-family ipv4 autonomous-system 1 ! topology base exit-sf-topology exit-service-family ! voice service saf profile trunk-route 1 session protocol sip interface Loopbackl transport tcp port 5060 !
B.	router eigrp SAF ! service-family ipv4 autonomous-system 1 ! topology base exit-sf-topology exit-service-family ! voice service saf profile trunk-route 1 session protocol sip interface Loopbackl transport tcp port 5060 ! profile dn-block 1 alias-prefix 1972555 pattern 1 type extension 4xxx ! profile callcontrol 1 dn-service trunk-route 1 dn-block 1 dn-block 2 !
C.	router eigrp SAF ! service-family ipv4 autonomous-system 1 ! topology base exit-sf-topology exit-service-family ! voice service saf profile trunk-route 1 session protocol sip interface Loopbackl transport tcp port 5060 ! profile dn-block 1 alias-prefix 1972555 pattern 1 type extension 4xxx ! profile callcontrol 1 dn-service trunk-route 1 dn-block 1 dn-block 2 ! channel 1 vrouter SAF asystem 1 subscribe callcontrol wildcarded publish callcontrol 1 !
D.	router eigrp SAF ! service-family ipv4 autonomous-system 1 ! topology base exit-sf-topology exit-service-family ! voice service saf ! channel 1 vrouter SAF asystem 1 !
E.	router eigrp SAF ! service-family ipv4 autonomous-system 1 ! topology base exit-sf-topology exit-service-family !