Refer to the exhibit.

When a call between two HQ users was being conferenced with a remote user at the BR site, the conference failed. Which configuration would be needed to solve the problem?

A.	The BR_MRG must contain the transcoder device. The BR_MRGL must be assigned to the BR phones.
B.	The HQ_MRG must contain the transcoder device. The HQ_MRGL must be assigned to the HQ phones.
C.	A transcoder should be configured at the remote site and assigned to all remote phones through the BR_MRGL.
D.	The HQ_MRG must contain the transcoder device. The HQ_MRGL must be assigned to the software conference bridge.
E.	Enable the software conference bridge to support G.711 and G.729 codecs in Cisco Unified Communications Manager service parameters.