When shrinking a table segment， you choose to shrink all the indexes for that table using the SHRINK SPACE command. Which clause should you use？（）

A. Heap tables
B. Tables with function-based indexes
C. Indexes
D. Partitions and subpartitions
E. None of the above

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.