You must troubleshoot a CoS issue on an Ethernet interface which has been observed to
drop packets in the best effort queue. You must determine whether the dropped packets are
tail drops. Which CLI command output accomplishes this task?

A.
show interfaces queue <interface_name>

B.
show interfaces <interface_name> extensive

C.
show class-of-service forwarding-class best-effort

D.
show class-of-service interface