Which statement describes the major difference between PEAP and EAP-FAST client authentication?

Which statement describes the major difference between PEAP and EAP-FAST client authentication?

A.
EAP-FAST requires a backend AAA server, and PEAP does not.

B.
EAP-FAST is a Cisco-only proprietary protocol, whereas PEAP is an industry-standard protocol.

C.
PEAP requires a server-side certificate, while EAP-FAST does not require certificates.

D.
PEAP authentication protocol requires a client certificate, and EAP-FAST requires a secure password.

Explanation: