问题：

[单选] Select the action that results from executing these commands.（）Switch(config-if)# switchport port-securitySwitch(config-if)# switchport port-security mac-address sticky

A . A dynamically learned MAC address is saved in the startup-configuration file.
B . A dynamically learned MAC address is saved in the running-configuration file.
C . A dynamically learned MAC address is saved in the VLAN database.
D . Statically configured MAC addresses are saved in the startup-configuration file if frames from that address are received.
E . Statically configured MAC addresses are saved in the running-configuration file if frames from that address are received.