$802\mathrm{.}1$X standard uses different protocols for its operation. Which statement is true? $($Choose one.$)$

EAPOL is used between supplicant and authenticator. RADIUS is used between authenticator and authentication server.

RADIUS is used between supplicant and authenticator. EAPOL is used between authenticator and authentication server.

RADIUS is between supplicant and authenticator. RADIUS is used between authenticator and authentication server.