Refer to the exhibit.
A collaboration engineer needs to replace the original, single NTP server that was configured during the initial install of a Cisco UCM server. What is the first step to accomplish this task?
A. Stop the NTP service on Cisco UCM.
B. Enable NTP authentication for the new NTP server on Cisco UCM.
C. Restart the NTP service on Cisco UCM.
D. Delete the original NTP server from Cisco UCM.
