which continue to pass traffic. What has caused this problem?

A client roams from H-REAP AP1 to H-REAP AP2. The client is unable to associate to H-REAP AP2. H-REAP AP2 has six other clients associated to it, which continue to pass traffic. What has caused this problem?

A.
H-REAP AP1 lost its connection to the controller.

B.
H-REAP AP2 lost its connection to the controller.

C.
H-REAP AP1 has reached its client limit.

D.
H-REAP AP2 has reached its client limit.