Which command would you use to configure BPDU Guard on an interface?

A. SwitchA(config-if)# switchport mode bpduguard
B. SwitchA(config-if)# switchport bpduguard enable
C. SwitchA(config-if)# spanning-tree bpduguard enable
D. SwitchA(config-if)# spanning-tree bpduguard

C. The correct command to configure BPDU Guard on a single interface is spanning-tree bpduguard entered into the interface you want to turn it on for.