Refer to the exhibit.

Several interfaces on an AOS-Switch enforce 802.1X to a Radius server at 10.254.202.202. The interface 802.1X settings are shown in the exhibit, and 802.1X is also enabled globally. The security team have added a requirement for port security on the interfaces as well. Before administrators enable port security, which additional step must they complete to prevent issues?

A. Set 802.1X client limit on the interfaces.

B. Manually add legitimate MAC addresses to the switch authorized MAC list.

C. Enable DHCP snooping on VLAN 20.

D. Enable eavesdropping protection on the interfaces.