The DB_BLOCK_CHECKING initialization parameter is set to FALSE. What level of block checking would be performed？（）

• A、 The Oracle database will not perform block checking for any of the data blocks.
• B、 The Oracle database will perform block checking for the default permanent tablespace only. 
• C、 The Oracle database will perform block checking for the data blocks in all user tablespaces.
• D、 The Oracle database will perform block checking for the data blocks in the SYSTEM tablespace only.
• E、 The Oracle database will perform block checking for the data blocks in the SYSTEM and SYSAUX tablespaces.