What is the reason the interface status below shows as “administratively down, line protocol down”?
Router# show interface s0/1
Serial 0/1 is administratively down, line protocol is down
A.
There is a problem with the other end of the cable
B.
An incorrect cable has been used to connect the interface
C.
Interface serial 0/1 has been incorrectly configured
D.
The administrator has issued the “shutdown” command under interface s0/1
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