Assuming that QoS is implemented on the WAN connection, which classification is used to mark the video traffic, according to the Cisco QoS baseline?

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An administrator with ID392522059 is receiving complaints of pixilation, smearing, and pulsing of video calls between two offices that are connected by a WAN.

Assuming that QoS is implemented on the WAN connection, which classification is used to mark the video traffic, according to the Cisco QoS baseline?
A . EF
B . CS3
C . AF41
D . AF31

Answer: C