When does 802.1X authentication of a wireless station occur?

When does 802.1X authentication of a wireless station occur?

A.
It occurs after the 802.11 association process, but before the 802.11 authentication process.

B.
It occurs after the 802.11 association process.

C.
It occurs in place of the 802.11 authentication process.

D.
It occurs after the 802.11 authentication process, but before the 802.11 association process.