In a deployment using standalone access points， clients set up to authenticate with eap-peap or eap-cisco wireless （cisco-leap） cannot authenticatE. when you inspect the failed attempts report on the cisco secure acs， you find this error： "unknown network access server nas." Which problem may have caused this failure？（）
- Amisconfigured ip address of the aaa server on the access point
- Bmisconfigured eap type on the access point
- Cmisconfigured ip address of the access point on the aaa server
- Dmisconfigured eap type on the aaa server