RMAN offers the equivalent of the SQL command alter database backup controlfile to trace.（）

A. It contains only SQL profiles generated by SQL Tuning Advisor.
B. It stores plans generated by the optimizer using a stored outline.
C. It is part of the data dictionary and stored in the SYSAUX tablespace.
D. It is part of the data dictionary and stored in the SYSTEM tablespace.
E. It contains the statement log, the plan history, plan baselines, and SQL profiles.

A. Database Datafiles
B. Database Control Files
C. Online redo logs
D. Archived redo logs
E. The database SPFILE
F. None of the above，all these files are backed up