You took the DATA1 tablespace offline at 10：00 A.M. At 12：30 P.M.， a schema of a user is dropped and purged from the Recycle Bin. You noticed this at 2：00 P.M. and decided to perform an incomplete recovery.  Which datafiles will you recover？（）

• A、 all the datafiles in the database
• B、 the datafiles associated with the SYSTEM tablespace
• C、 the datafiles associated with the DATA1 tablespace
• D、 all the datafiles in the database except those associated with the DATA1 tablespace