Which two of the following need to be considered when designing QoS in a Cisco Borderless Network? (Choose two.)?

Which two of the following need to be considered when designing QoS in a Cisco
Borderless Network? (Choose two.)?

A.
In order to receive priority treatment for mission-critical traffic across the SP cloud, the
higher number of locally used classes of service have to be mapped to the fewer number
service classes that are usually offered by service providers.

B.
In order to maintain DSCP values end-to-end, inbound traffic from the SP cloud needs to
be reclassified if it was sent through a tunnel.

C.
RFC 4594 describes how to classify and mark traffic at the campus and branch LAN
using 12 different classifications.

D.
According to RFC 4594, voice and video traffic should be sent through two separate
priority queues.