Which deployed VoWLAN client security option is recommended by Cisco?()
A、A.Layer 3 with Layer 3 Security set to None and Web Policy set to Authentication
B、B.Layer 3 with Layer 3 Security set to None and Web Policy set to VPN Pass-Through
C、C.Layer 3 with Layer 3 Security set to VPN Pass-Through
D、D.Layer 2 with Layer 2 Security set to 802.1X