[单选题]You issue this SQL statement：  ALTER DATABASE RENA

AIt updates the control file with the new location of the data file. 

BIt updates only the data dictionary with the new location of the data file. 

CIt changes the location of the user_data01.dbf file in the operating system. 

DIt changes the location of the user_data01.dbf file in the operating system and updates the control file with the new location of the data file.