By default, what happens to the user’s session when it is handed over to the Standby UAC (S-UAC) after a failover?

Refer to the exhibit.

An administrator implements an L2 cluster of Aruba Mobility Controllers (MCs) as shown in the exhibit. An external RADUIS AAA server authenticates clients associated with the Active User Anchor Controller (A-UAC), where the NAS IP address sent from Controller B is 10.254.1.2.

By default, what happens to the user’s session when it is handed over to the Standby UAC (S-UAC) after a failover?
A . The user’s session remains active and RADIUS messages can still be processed between the S-UAC and AAA server.
B . The user’s session remains active, but the AAA server cannot implement RADIUS Change of Authorization (CoA).
C . The user’s session is disconnected and has to reconnect, and no record of this process is stored on the AAA server.
D . The user’s session is disconnected and has to reconnect, but the S-UAC automatically updates the NAS-IP address on the AAA server to record the event.

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Answer: C