You Work for a Company That Has Several Instances Running

Multiple Choice

You work for a company that has several instances running with automatically assigned public IPs. You performed an upgrade that required you to restart the instances from the console and your DNS records don't work anymore. What happened?

A) Your network interfaces need to be reinitialized
B) You need to restart Route 53
C) Restarting too many instances at once overloads the system
D) The instances changed their public IP addresses on restart