What statements are true about 802.11-2012 Protected Management Frames? (Choose 2)

A.
802.11w frame protection protects against some Layer 2 denial-of-service (DoS) attacks, but it cannot prevent all types of Layer 2 DoS attacks.

B.
When frame protection is in use, the PHY preamble and header as well as the MAC header are encrypted with 256- or 512-bit AES.

C.
Authentication, association, and acknowledgment frames are protected if management frame protection is enabled, but deauthentication and disassociation
frames are not.

D.
Management frame protection protects disassociation and deauthentication frames.