（单选题）

The database is running in the ARCHIVELOG mode. It has three redo log groups with one member each.One of the redo log groups has become corrupted. You have issued the following command during the recovery of a damaged redo log file: ALTER DATABASE CLEAR UNARCHIVED LOGFILE GROUP 3; Which action should you perform immediately after using this command?（）

AYou should perform a log switch

BYou should make a backup of the database

CYou should switch the database to the NONARCHIVELOG mode

DYou should shut down the database instance and perform a complete database recovery

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