单项选择题

A. The port will permit the new MAC address because one or more of the original MAC addresses  are inactive.
B. The port will permit the new MAC address because one or more of the original MAC addresses  will age out.
C. Because the new MAC address is not configured on the port, the port will not permit the new  MAC address.
D. Although one or more of the original MAC addresses are inactive, the port will not permit the  new MAC address.