A Cloud Administrator Runs a Maintenance Script to Remove Unused

A cloud administrator runs a maintenance script to remove unused resources. After the maintenance has been performed, users report they can no longer access the application website. The administrator confirms the server is up and responding on the proper ports. Which of the following cleanup actions MOST likely caused the problem?

A) Removing inactive accounts
B) Removing outdated firewall rules
C) Removing stale DNS entries
D) Removing orphaned resources