Refer to the exhibit.  Which two Lightweight Access Point statements are true？（）

• A、 An AP that has been upgraded from an autonomous AP to lightweight AP will only function in  conjunction with a Cisco Wireless LAN controller.
• B、 LWAPP increases the amount of processing within the APs， enabling them to support filtering  and policy enforcement features.
• C、 WLAN controllers provide a single point of management.
• D、 Lightweight APs require local configurations using local management.
• E、 Real time events such as authentication， security management， and mobility are handled by the  lightweight AP.
• F、 Autonomous APs receive control and configuration information from a WLAN controller.