Which statement is true about 802.1x port-based authentication? Select the best response.

A.
Hosts are required to have a 802.1x authentication client or utilize PPPoE.

B.
Before transmitting data, an 802.1x host must determine the authorization state of the switch.

C.
RADIUS is the only supported authentication server type.

D.
If a host initiates the authentication process and does not receive a response, it assumes it is not authorized.