While working on the database， you receive the following error： 01578： ORACLE data block corrupted （file# 6， block # 54） ORA-01110 ： data file 6： ’u01/oracle/oradata/data1.dbf’ You decide to recover the corrupted data block by using the Block Media Recovery feature. Which option is NOT a disadvantage of using block media recovery？（）
- A Block Media Recovery must be used with RMAN.
- B You must perform complete recovery of individual blocks.
- C You must have a full RMAN backup， not an incremental backup.
- D You must use the DBVERIFY utility before using the Block Media Recovery feature.