Bandwidth-based Call Admission Control for voice services allows the client to request the required bandwidth or medium time to accept calls in acongested RF environment. Which three of these statements must be true in order for bandwidth-based CAC to correctly operate for voice calls? (Choose three.)
A. WLAN must use the silver QoS profile
B. WLAN must use the gold QoS profile
C. WLAN must use the platinum QoS profile
D. Client must support at least CCXv4
E. Client must support at least CCXv3
F. WMM does not need to be enabled for WLAN
G. WMM must be enabled for WLAN
