What is the advantage of EAP-FAST compared to LEAP? 

Answer options:

A. EAP-FAST exchanges user credentials within a TLS tunnel whereas LEAP exchanges credentials information in clear, which allows possible offline "dictionary attacks."
B. EAP-FAST allows authenticated in-band PAC provisioning, whereas LEAP uses anonymous in-band PAC provisioning, which is transparent to the user.
C. LEAP only supports user and password changes in conjunction with MS-CHAPv2, whereas EAP-FAST supports user and password changes when using MS- CHAPv2 or OTP or PAC.D. EAP-FAST works with the 802.11 authentication algorithm "open eap," and also with "network-eap," whereas LEAP is limited to the 802.11 authentication

A