What is the recommended minimum speed at the edge of the cells in an 802.11g network for a good Cisco VoWLAN deployment?（）

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

A.Cisco Unified Communications Manager
B.Cisco Spectrum Expert
C.Vocera Server to display the username of the Vocera badge
D.Polycom SpectraLink syslog server
E.Cisco WCS VoWLAN readiness tool