【单项选择题】
Which authentication types are allowed with the Cisco ADU when selecting WPA/WPA2/CCKM under the security options?()
A、A.Cisco-LEAP, EAP-FAST, EAP-PEAP (GTC), EAP-TLS
B、B.Cisco-LEAP, EAP-MD5, EAP-PEAP (GTC), EAP-TTLS
C、C.Cisco-LEAP, EAP-PSK, EAP-PEAP (MS-CHAP v2), EAP-TLS
D、D.Cisco-LEAP, EAP-FAST, EAP-PEAP (MS-CHAP v2), EAP-TTLS