You are using Oracle Database 10g. The LOG_ARCHIVE_FORMAT parameter is set to ’LOG%t_%s_%r.dbf’. Why is %r used in the file name format？（）
- Ato uniquely identify the archived log files with the restore operation
- Bto uniquely identify the archived log files with the redo log group number
- Cto uniquely identify the archived log files for each incarnation of the database
- Dto uniquely identify the archived log files with the number of recovery operations performed