In which two ways is IPv4 and IPv6 traffic handled in a network design that uses QoS deployment options? (Choose two.)

In which two ways is IPv4 and IPv6 traffic handled in a network design that uses QoS deployment options? (Choose two.)
A . IPv6 and IPv4 traffic is treated in the same way by using a single QoS policy that classifies and matches on both protocols.
B . IPv6 traffic is treated differently than IPv4 by using the flow-label field, which is built into the IPv6 packet header.
C . IPv6 traffic does not require QoS because it uses to the flow-label field, which classifies and matches on the IPv6 protocol.
D . IPv6 traffic is treated differently than IPv4 by using two different QoS policies.
E . IPv6 traffic is treated differently than IPv4 because it uses only the DSCP value and not the IP precedence.

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Answer: A,D