While attempting to enable the SIP publish trunk in Cisco Unified Presence, it is observed that there is no trunk that is displayed in the drop-down list. Which previous configuration step should be verified?

A.	Verify that the trunk has the correct IP address.
B.	Verify that the trunk has been enabled for SIP Notify.
C.	Verify that the Cisco Messaging Interface service has been started.
D.	Verify that the trunk was selected in the Cisco CallManager service parameters.
E.	Verify that the CUCM service was restarted after configuration.