You work as a network engineer at Domain .com. You are troubleshooting a BGP neighbor relationship in which the neighbor relationship has gone down. You issue the following command:
show ip bgp summary
You see the string “PfxCt” and Idle appear in the State/PfxRcd field.
What could be the cause of this issue?

A.
The neighbor has been manually shutdown.

B.
The maximum prefix limit had been set and exceeded.

C.
The interface on the neighbor router is down.

D.
There is a problem with the service provider.

E.
The neighbor has no prefix to send.