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

Which statement about the Lightweight Access Point Protocol (LWAPP) is true? Select the best response.

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 Layer 3, LWAPP uses a proprietary protocol to communicate with the Cisco Aironet APs.