A corporation has a wireless network where all access points are configured in FlexConnect. The WLC has a Data WLAN and a VoWiFi WLAN implemented where centrally-switched SSID is configured for the APs. Which QoS configuration must be implemented for the wireless packets to maintain the marking across the wired and wireless network? 

Answer options:

A. Set QoS to Platinum.
B. Enable CAC.C. Allow WMM.
D. Trust DSCP.

D