Which three statements are true about load-based Call Admission Control?

Which three statements are true about load-based Call Admission Control? (Choose three.)

A.
grants a VoWLAN client-initiated call based on the number of active clients associated to the access point

B.
grants a VoWLAN client-initiated call based on channel bandwidth capacity

C.
uses the 802.11i specification

D.
uses 802.11 action frames

E.
requires a WMM-enabled client