In the IEEE 802.11 standard, what is the purpose of the 802.1X Uncontrolled Port?

A.
To allow authentication PDUs to flow between the Supplicant and Authentication Server

B.
To block authentication traffic until the 4-Way Handshake completes

C.
To pass general data traffic after the completion of 802.11 AKM

D.
To block unencrypted PDUs after a 4-Way Handshake completes