A switch is set up to allow only 2 simultaneous MAC addresses per switch port. An administrator is reviewing a
log and determines that a switch ort has been deactivated in a conference room after it detected 3 or more
MAC addresses on the same port. Which of the following reasons could have caused this port to be disabled?

A.
A pc had a NIC replaced and reconnected to the switch

B.
An ip telephone has been plugged in

C.
A rouge access point was plugged in

D.
An arp attack was launched from a pc on this port