If you disable PortFast on switch ports that are connected to a Cisco ASA and globally turn on BPDU filtering, what is the effect on the switch ports?
A. The switch ports are prevented from going into an err-disable state if a BPDU is received.
B. The switch ports are prevented from going into an err-disable state if a BPDU is sent.
C. The switch ports are prevented from going into an err-disable state if a BPDU is received and sent.
D. The switch ports are prevented from forming a trunk.
