Clients using cisco-leap and eap-fast authentication are having no problems logging on to The wireless network， but clients using peap are failing to log on. Which situation would result in this type of problem？（）

• A、posture validation has not been enabled.
• B、the aaa server is set to accept both ms-chap v2 and gtc for peap authentication.
• C、clients and server are not using certificates.
• D、clients have been set to validate the server identity.