Regarding the following items, which two are necessary to ensure time synchronization in the Cisco Unified MeetingPlace solution? (Choose two.)

A.
The Application Server should use the NTP from the Web Server.

B.
The Web Server should use the NTP from the corporate source.

C.
The Application Server should use the NTP from the corporate source.

D.
The Web Server should use the NTP from the Application Server source.