Your network management system (NMS) is currently indicating the following unrelated issues:

A router in a remote site is down. An interface on a core switch is down. An interface on a core switch has disappeared. A switch in a remote site is down.

Which scenario is most likely to be true?

A. A router in a remote site is down.

B. An interface on a core switch is down.

C. An interface on a core switch has disappeared.

D. A switch in a remote site is down.