WPA2 Enterprise with 802.1X is being used for clients to authenticate to a wireless network through a Cisco ISE server. For security reasons, the network engineer wants to ensure that only PEAP authentication is used. The engineer sent instructions to clients on how to configure the supplicants, but the ISE logs still show users authenticating using EAP-FAST. Which action &users unless the correct authentication mechanism is configured?
A. nable AAA override on the SSID and configure an access policy in Cisco ISE that allows access only when the EAP authentication method is PEAP
B. nable AAA override on the SSID and configure an access policy in Cisco ISE that denies access to the list of MACs that have used EAP-FAST
C. nable AAA override on the SSID, gather the usernames of these users, and disable the RADIUS accounts until the devices are correctly configured
D. nable AAA override on the SSID and configure an ACL on the WLC that allows access to users with IP addresses from a specific subnet