You are performing a block media recovery on the tools01.dbf data file in the SALES database using RMAN. Which two statements are correct in this scenario？（）

• A、 You must ensure that the SALES database is mounted or open.
• B、 You must restore a backup control file to perform a block media recovery.
• C、 You must take the tools01.dbf data file offline before you start a block media recovery.
• D、 You must put the database in NOARCHIVELOG mode to perform a block media recovery.
• E、 You can perform only a complete media recovery of individual blocks， point-in-time recovery of individual data blocks is not supported.