After making configuration changes, a network administrator issues a copy running-config startup-config command in a Cisco switch. What is the result of issuing this command?

After making configuration changes, a network administrator issues a copy running-config startup-config command in a Cisco switch. What is the result of issuing this command?
The configuration changes will be removed and the original configuration will be restored.
The new configuration will be stored in flash memory.
The current IOS file will be replaced with the newly configured file.
The new configuration will be loaded if the switch is restarted.