Which statement is correct about the single-secure mode of 802.1X?

A.
It allows any one supplicant on the interface to be authenticated; once authentication is successful, only the successfully authenticated supplicant is allowed access at one time.

B.
It allows any number of supplicants on the interface to be authenticated; only supplicants with their own successful authentication are allowed access at the same time.

C.
It allows any one supplicant on the interface to be authenticated; once authentication is successful, any other devices on the same interface will gain access.

D.
It does not require any supplicant on the interface; no supplicant is able to gain access.