A Customer Needs a Networking Solution That Supports Their Microsoft

A customer needs a networking solution that supports their Microsoft Skype for Business Unified Communications (UC) solution. The architect discovers that user wireless devices are Wi-Fi Multimedia (WMM) capable. Windows policies assign voice traffic DSCP 46 and video traffic DSCP 34. Which potential issue should the architect explain to the customer about the default QoS settings?

A) The DSCP values place both voice and video traffic in the video VMM queue, so voice does not receive the prioritization that is should.
B) The Aruba APs and controllers use different prioritization mechanism from WMM, so they will not accept high priority traffic from the wireless devices.
C) DSCP is incompatible with WMM. The Aruba APs and controllers instead use 802.1p to mark traffic to and from wireless devices.
D) The DSCP for wireless client traffic is concealed within the GRE packet on the path from the AP to the controller, and does not take effect.