Which device configuration option will allow an administrator to assign a device to a specific rights for making calls to specific DNs?

Scenario:
There are two call control systems in this item. The Cisco UCM is controlling the DX650. the Cisco Jabber for Windows Client, and the 9971 Video IP Phone. The Cisco VCS is controlling the SX20. the Cisco Telepresence MCU. and the Cisco Jabber Telepresence for Windows.
SX20 System information:

DX650 Configuration:

MRGL:

DP:

Locations:

AARG:

CSS:

Movi Failure:

Movie Settings:
Which device configuration option will allow an administrator to assign a device to a specific rights for making calls to specific DNs?
A. Media Resource Group List
B. Device Pool
C. Location
D. AAR Group
E. Calling Search Space