Refer to the exhibit.
switch(config)#spanning-tree portfast default %Warning: this command enables portfast by default on all interfaces. You should now disable portfast explicitly on switched ports leading to hubs, switches and bridges as they may create temporary bridging loops. switch(config)#
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