You work in a company which uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a database named DB1 in the instance. TheDB1 database includes spatial data types. On DB1 databse, you have to perform a database consistency check to include the spatial indexes. Besides this, you must make sure that you can reduce the effect on the database concurrency to the least.  So which Transact-SQL statement should you run? （） 

• A、DBCC CHECKCATALOG (DB1); 
• B、DBCC CHECKALLOC (DB1) WITH TABLOCK; 
• C、DBCC CHECKDB (DB1) WITH TABLOCK, PHYSICAL_ONLY; 
• D、DBCC CHECKDB (DB1) WITH EXTENDED_LOGICAL_CHECKS;