Which two statements are true about QoS when implemented on a Brocade FastIron platform?

(Choose two.)

A.
Packets with lower priority classifications are given a higher precedence for forwarding.

B.
Packets with higher priority classifications are given a higher precedence for forwarding.

C.
Stackable devices use CoS 0 for stacking communication.

D.
Stackable devices use CoS 7 for stacking communication.