When you enable port security on an interface that is also configured with a voice VLAN， what is the maximum number of secure MAC addresses that should be set on the port？（）

A. No more than one secure MAC address should be set.
B. The default will be set.
C. The IP phone should use a dedicated port， therefore only one MAC address is needed per port.
D. No value is needed if the switchport priority extend command is configured.
E. No more than two secure MAC addresses should be set.