You are tuning RMAN to optimize performance. You want tape I/O to be asynchronous when you perform tape backups. Which action should you take？（）

• A、 Set the BACKUP_TAPE_IO_SLAVES parameter to FALSE
• B、 Set the BACKUP_TAPE_IO_SLAVES parameter to TRUE
• C、 Use compression when performing tape backups
• D、 Configure multiple SBT channels