For which of the following can you use Segment Shrink？（）

A. Reclaims space above and below the high-water mark without using additional space
B. Moves rows to a new physical location，resetting the high-water mark，but uses additional space during the operation
C. Deallocates space above the high-water mark that is currently not in use
D. None of the above

A. The database must be in read-write mode.
B. The database must have no external files.
C. The database must open in read-only mode.
D. The database must be mounted but not opened.

A. Query the V$TRANSPORTABLE_PLATFORMS view in the source database to determine if the intended destination is listed.
B. Verify that there are no restrictions or limitations that the source or destination database may encounter.
C. Verify that the source and destination have the same Oracle version critical updates，patch-set version，and patch- set exceptions.
D. Determine if you will perform the conversion on the source or destination platform. 
E. None of the above.