Which Cisco Catalyst IOS command can be used to mitigate a CAM table overflow attack?

A new Company switch has been installed and you wish to secure it. Which Cisco Catalyst IOS
command can be used to mitigate a CAM table overflow attack?

A.
CK-S(config-if)# pott-security maximum 1

B.
CK-S(config)# switchport port-security

C.
CK-S(config-if)# port-security

D.
CK-S(config-if)£ switchport port-security maximum 1