In your database, the flash recovery area (FRA) is configured as the default for RMAN backups. You executed the following commands to configure the settings in RMAN: Which statement is true about the outcome?（）

• A、Only one channel is allocated and the backup is created in the flash recovery area
• B、Only one channel is allocated and the backup is created in the destination specified for channel
• C、Two channels are allocated and backup sets are created in the destinations specified for channels 1 and 2
• D、Three channels are allocated and backup sets are created in the destinations specified for channels 1, 2, and FRA