Regarding the precautions for configuring the dual-system hot backup function, which of the following statements is wrong?

Regarding the precautions for configuring the dual-system hot backup function, which of the following statements is wrong?
A . When configuring dual-link hot backup, you need to use the commit command on the AC to deliver the configuration to the AP after completing the service configuration on both the active and standby ACs.
B . When configuring dual-link hot backup, after the main AC completes the service configuration, execute the commit command to deliver the configuration to the AP, and then complete the configuration of the standby AC
C . When configuring dual-link hot backup, for the same AP associated with the active and standby ACs, the WLAN-related service configuration must be consistent. Otherwise, the normal operation of the AP cannot be guaranteed after the AC’s active and standby status is switched.
D . During dual-link hot backup active/standby switching, due to the long switching time, the business data forwarded by the tunnel will be interrupted during this period, and new user will not be able to go online, and online users will not be able to roam.

Answer: B