The corporate office sends you a new router to connect, but upon connecting the console cable, you see that there is already a configuration on the router. What should be done before a new configuration is entered in the router?

• RAM should be erased and the router restarted.
• Flash should be erased and the router restarted.
• NVRAM should be erased and the router restarted.
• The new configuration should be entered and saved.