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.