Which two EAP types does the Cisco Unified Wireless IP Phone 7921G firmware code version 1.3(x) support?（）

A.Avoid channels with high AP co-channel interference.
B.Use channels with high AP co-channel interference to avoid channel roams.
C.Set the 2.4-GHz data rate of 5.5 Mb/s to required.
D.Use 5-GHz channels when possible.
E.Use 2.4-GHz channels when possible.

A.11 Mb/s
B.18 Mb/s
C.24 Mb/s
D.54 Mb/s

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