Which authentication types are allowed with the cisco adu when selecting wpa/wpa2/cckm under the security options？（）

A. cisco-leap，eap-fast，eap-peap（gtc），eap-tls
B. cisco-leap，eap-psk，eap-peap（ms-chap v2），eap-tls
C. cisco-leap，eap-fast，eap-peap（ms-chap v2），eap-ttls
D. cisco-leap，eap-md5，eap-peap（gtc），eap-ttl