Which statement is true regarding the initiation of an 802.1X authentication exchange?

A.
EAPOL-Start is always initiated by the supplicant.

B.
EAPOL-Start can be initiated by the supplicant or the authenticator.

C.
EAPOL-Start is never initiated by the supplicant

D.
EAPOL-Start is always initiated by the authenticator.

E.
EAPOL-Start is never initiated by the authenticator.