Which statement about Online Move Data file is true?

A.
Moving a data file online prevents DML operations on segments stored in the data file.

B.
Flashing back a database to a point in time before a data file had been renamed online retains the new
name.

C.
Moving a data file online can be performed if the data file is in OFFLINE mode.

D.
Moving a data file online cannot be performed if the data file is under BEGIN BACKUP.