What is the reason that the MC does not appear as a managed device in the hierarchy?

Refer to the exhibit.

A network administrator adds a Mobility Controller (MC) in the /mm level and notices that the device does not show up in the managed networks hierarchy. The network administrator accesses the CLI. executes the show switches command, and obtains the output shown in the exhibit.

What is the reason that the MC does not appear as a managed device in the hierarchy?
A . The network administrator added the device using the wrong Pre-Shared Key (PSK).
B . The network administrator has not moved the device into a group yet.
C . The digital certificate of the MC is not trusted by the M
E . The IP address of the MC does not match the one that was defined in the M

Answer: D