In your production database you want to use an Automatic Storage Management （ASM） instance to manage the database files.  Which option would you use to migrate the database files from a non/x7fASM instance to an ASM instance？（）

• A、Oracle Migration Assistant
• B、Recovery Manager （RMAN）
• C、Oracle Data Pump Export and Import
• D、conventional Oracle Export and Import
• E、operating system utilities to copy the files to the ASM instance