In your database， all the tablespaces are locally managed. You started Recovery Manager （RMAN） using recovery catalog. The following commands are used in the process of recovering the database by using the backup control file： 
In what sequence would you use this process to perform the recovery？（）

A.These are the data files that are corrupted.
B.There is no SYSAUX tablespace in your database
C.There is a read­only tablespace in your database.
D.These are the data files that cannot be recovered.

A.drop the read­only tablespace and re­create the tablespace after recovery
B.take data files from the read­only tablespace offline before performing a recovery
C.perform a recovery; status of the tablespace in control file will be changed automatically
D.recovery using backup control file is not possible， so restore all the files from the last full database backup， and then open the database

A.drop and re­create the read­only tablespaces
B.rename the read­only data files to their correct file names
C.change the tablespace status from read/write to read­only
D.re­create the read­only tablespace because it is automatically removed