Which of the following descriptions about the steps of Layer 2 roaming is wrong?

Which of the following descriptions about the steps of Layer 2 roaming is wrong?
A . STA monitors each channel beacon, finds that AP2 meets the roaming conditions, and sends a probe request to AP2
B . After AP2 receives the request in channel 6 (the channel used by AP2), it responds by sending a response in channel 6
C . STA transmits 802.11 disassociation information to AP1 through channel 6 (the channel used by AP2), disassociate the user from AP1
D . STA sends an association request to AP2 through channel 6, and AP2 responds with an association response to establish an association between the user and AP2

Answer: C