Refer to the exhibit. When a Cisco IP Communicator Phone roams from the San Jose site to the RTP site, the Physical Location for the Cisco IP Communicator Phone changes and the Device Mobility Group remains the same. After roaming to RTP, the user called a colleague in RTP and conferenced in a phone in his home location (San Jose). Which statement about the MRGL for the Cisco IP Communicator Phone is true?

A.
The Cisco IP Communicator Phone will use the RTP_MRGL regardless of Device Mobility Group.

B.
The Cisco IP Communicator Phone will use the Home MRGL (SJ_ MRGL) since he is conferencing a user at his home location.

C.
The Cisco IP Communicator Phone will use the Home MRGL (SJ_ MRGL) since his Device Mobility Group (DMG) remained the same.

D.
The Cisco IP Communicator Phone will use the RTP_MRGL since his Device Mobility Group remained the same.