A network engineer is investigating the cause of a service disruption on a network segment and executes the debug condition interface fastethernet f0/0 command.
In which situation is the debugging output generated?

A.	when packets on the interface are received and the interface is operational
B.	when packets on the interface are received and logging buffered is enabled
C.	when packets on the interface are received and forwarded to a configured syslog server
D.	when packets on the interface are received and the interface is shut down