Where in the configuration would you create the necessary bandwidth limits?

You are asked to apply individual upload and download bandwidth limits to YouTube traffic.
Where in the configuration would you create the necessary bandwidth limits?

A.
under the [edit security application-firewall] hierarchy

B.
under the [edit firewall policer <policer-name>] hierarchy

C.
under the [edit security policies] hierarchy

D.
under the [edit class-of-service] hierarchy