Which command allows the telephony service of a Cisco Unified Communications Manager Express router to be associated to loopback address 192.168.143.44?

Which command allows the telephony service of a Cisco Unified Communications Manager Express router to be associated to loopback address 192.168.143.44?
A . !telephony-servicemax-ephones 4max-dn 8ip source-address 192.168.143.44!
B . !telephony-servicemax-ephones 4max-dn 8ip bind src-addr 192.168.143.44!
C . !telephony-servicemax-ephones 4max-dn 8source-address ipv4:192.168.143.44!
D . !telephony-servicemax-ephones 4max-dn 8ip address 192.168.143.44!

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Answer: A