Refer to the Exhibit.

An administrator is installing patches on one of the vCloud Cells in a multi-cell environment.
When attempting to connect to the cell and determine the status of the cell, the administrator
encounters the issue displayed in the exhibit.
What could cause this issue?

A.
The cell service is unreachable.

B.
The cell watchdog service is unavailable.

C.
The login credentials are incorrect.

D.
The command is invalid.