Two Cisco DX80 collaboration endpoints that support high-definition video are registered to a Cisco Unified Communications Manager in a single-site deployment model. However, the video that is displayed is pixelated and appears as sub-HD. To enable the Cisco DX80s to make high- definition video calls, which configuration option do you check?

A.	Check the configuration in the Cisco DX80 settings menu, and enable high-definition video.
B.	Check the Maximum Session Bit Rate for Video Calls in the Cisco Unified Communications Manager Regions Configuration.
C.	Check that Video Capabilities are enabled under the Product Specific Configuration area for the device in Cisco Unified Communications Manager.
D.	Check the DSCP for Video Callsvalue in the Cisco Unified Communications Manager clusterwide parameters QoS configuration.