A company notices that one of their Oracle data files is corrupted. The storage administrator must perform a TimeFinder restore of the corrupted tablespace.
What must be done before unmounting the file system and performing the TimeFinder restore?

A.
Tablespace containing the dbf file must be taken offline

B.
Entire database must be taken offline

C.
A UNIX fsck must be executed on the source LUN

D.
Mount the target file system and copy the dbf file from the target to the source