You are working on a 24x7 （available 24 hours per day， 7 days per week） production database. An operating system （OS） user deletes the alert log file accidentally. Which statement in this scenario is true？（）

• A、The database crashes.
• B、The DBA needs to re-create the file.
• C、The file gets re-created automatically.
• D、The file gets restored automatically from the last backup.
• E、The DBA needs to perform a complete database recovery.
• F、The DBA needs to perform an incomplete database recovery.