What happens to a wireless client when it moves from one controller to another in a different mobility domain?

What happens to a wireless client when it moves from one controller to another in a different mobility domain?

A.
The client will have to reauthenticate, reassociate, and get new IP address information.

B.
The client will have to reauthenticate and reassociate, but will be able to keep its IP address information.

C.
Nothing happens as long as the client roams within the same mobility group.

D.
It is not possible to roam to a different mobility domain.