单项选择题

A. The spoof packets will be inspected at the ingress port of switch SW_A and will be permitted.
B. The spoof packets will not be inspected at the ingress port of switch SW_A and will be  permitted.
C. The spoof packets will not be inspected at the ingress port of switch SW_A and will be dropped.
D. The spoof packets will be inspected at the ingress port of switch SW_A and will be dropped.