The diagram displays various points where QoS configuration may
be used. Based on the diagram, which two statements correctly identify the appropriate
QoS usage? (Choose two.)

A.
Location A should provide either Trust DHCP or Set DSCP.

B.
Location B should provide Trust DSCP and Trust COS.

C.
Location A should provide Trust DSCP.

D.
Location B should provide Set DSCP and Set COS.