A customer is trying to decide which 802.1X inner protocol to use on their network. The customer requires that nopasswords be sent across the network in plain text, that the protocol be supported by the Windows native supplicant,and that the protocol supports password changes at Layer 2.
Which protocol would meet the customers needs?（）

A. EAP-TLS
B. EAP-MD5
C. PAP
D. EAP-MSCHAPv2