Refer to the exhibit

The exhibit shows a SAF Forwarder configuration attached to a Cisco Unified Communications Manager.

Which minimum configuration for a Cisco Unified Communications Manager Express SAF Forwarder is needed to establish a SAF neighbor relationship with this SAF Forwarder?

A.
router eigrp SAF
i
service-family ipv4 autonomous-system 1
!
topology base
exit-sf-topology
exit-service-family
voice service saf
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Cisco 642-457 Exam
profile trunkroute 1
session protocol sip interface Loopback1 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 Loopback1 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
!

C.
router eigrp SAF
!
service-family ipv4 autonomous-system 1
!
topology base
exit-sf-topology
exit-service-family
!

D.
None of above configurations contain sufficient information.

Explanation:
Incorrect answer: ABD
only following configuration is enough
router eigrp SAF
service-family ipv4 autonomous-system 1
exit-service-family
link:http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6554/ps6599/ps10822/whitepa per_c11-636604.html