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
i

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
i

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
i

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 i