Refer to the exhibit.

When troubleshooting a network problem, a network analyzer is connected to Port f0/1 of a LAN
switch. Which command can prevent BPDU transmission on this port?

A.
spanning-tree portfast bpduguard enable

B.
spanning-tree bpduguard default

C.
spanning-tree portfast bpdufilter default

D.
no spanning-tree link-type shared