You work as a database administrator for Certkiller .com. Your database is opened in NOARCHIVEKLOG mode. You decide to place the database in ARCHIVELOG mode.  How would you do this？（）

• A、Execute the ALTER DATABASE ARCHIVELOG statement 
• B、Select ARCHIVELOG option in the database control and restart the database to apply the changes. 
• C、Shut down and start the instance, and in the NOMOUNT state execute the ALTER DATABASE ARCHIVELOG statement. 
• D、Shut down and start the instance, mount the database, then execute the ALTER DATABASE ARCHIVELOG statement.