View this parameter setting in your database：   DB_CREATE_FILE_DEST=’D:// /oracle/product/10.2.0/oradata/oracle’  You created a tablespace by using this command：   CREATE TABLESPACE USERS；  Which two statements are true about the USERS tablespace？（）

• A、The tablespace has two data files.
• B、An error is reported and tablespace creation fails.
• C、Data files are created with names generated by the instance.
• D、The tablespace can be extended without specifying the data file.
• E、Data files belonging to the USERS tablespace cannot be renamed.