Which two configuration steps are necessary to accomplish this task?

Exhibit:

R1 assigns incoming voice traffic to the ef forwarding class. All other traffic is assigned to the best-effort forwarding class You have configured a CoS re-write rule on R1 to include the correct CoS bit values in packets sent towards R2 You want R2 to classify traffic using the CoS markings created by R1.

Which two configuration steps are necessary to accomplish this task? (Choose two.)
A . Configure a CoS re-write rule on R2 and assign matching CoS values.
B . Assign the CoS re-write rule to the ge-0/0/1.0 interface on R2.
C . Assign the behavior aggregate classifier to the ge-0/0/1.0 interface on R2.
D . Configure a behavior aggregate classifier on R2.

Answer: B,C