What is the effect of configuring the following command on a switch?
Switch(config) # spanning-tree portfast bpdufilter default

A.
If BPDUs are received by a port configured for PortFast, then PortFast is disabled and the
BPDUs are processed normally.

B.
If BPDUs are received by a port configured for PortFast, they are ignored and none are
sent.

C.
If BPDUs are received by a port configured for Portfast, the port will transition to
forwarding state.

D.
The command will enable BPDU filtering on all ports regardless of whether they are
configured for BPDU filtering at the interface level.