In a deployment using the lightweight access points， clients set up to authenticate with EAP-PEAPor EAP-Cisco Wireless （LEAP） cannot authenticate. Upon inspection of the Failed Attempts reportyou see the following error： "Unknown network access server NAS."  What two problems can causethis type of failure？（）

• A、misconfigured IP address of the AAA server on the wireless controller
• B、misconfigured IP address of the wireless LAN controller on the AAA server
• C、misconfigured EAP type on the wireless LAN controller
• D、misconfigured shared secret on the wireless LAN controller
• E、misconfigured EAP type on the AAA server