Which statement about the Lightweight Access Point Protocol (LWAPP) is true?

A – LWAPP encrypts control traffic between the AP and the controller. B – LWAPP encrypts user traffic with a x.509 certificate using AES-CCMP. C – LWAPP encrypts both control traffic and user data. D – When set to Layer3, LWAPP uses a proprietary protocol to communicate with the Cisco Aironet APs.