Your database is running in ARCHIVELOG mode. The SCOTT.EMP table belongs to the DATA1 tablespace. The junior DBA erroneously runs a script that executes the following statement： SQL> DROP TABLE SCOTT.EMP PURGE； After one hour， you are performing the user managed incomplete recovery. Which datafiles will you restore from the last full backup？（）

A. the datafiles associated with the SYSTEM tablespace
B. the datafiles associated to the DATA1 tablespace
C. the datafiles associated to the SYSTEM and DATA1 tablespaces
D. all the datafiles in the database