A range of MeetMe conference numbers is reserved for manager use. Which method can be used to restrict non-managers from accessing these MeetMe numbers without limiting the ability to initiate ad hoc conferences?

A.
Placethe MeetMe numbers in an MRGL that is only assigned to the manager phones.

B.
Placethe MeetMe numbers in a partition that is only assigned to the CSS for the manager phones.

C.
Place the conference bridge resource in an MRGL that is only assigned to the manager phones.

D.
Place the conference bridge resource in a partition that is only assigned to the CSS for the manager phones.