which action by a workgroup bridge that is configured as a mobile station causes the WGB to search for a new parent association and roam to the new parent?

In the Cisco Unified architecture, which action by a workgroup bridge that is configured as a
mobile station causes the WGB to search for a new parent association and roam to the new
parent?

A.
It confronts a new WLAN.

B.
It encounters a poor RSSI.

C.
It gets a low battery notification.

D.
It travels beyond a specified distance.