9.Which statement describes the information returned by the DBMS_SPACE.SPACE_USAGE procedure for LOB space usage?
A.It returns space usage of only BasicFile LOB chunks.
B.It returns space usage of only SecureFile LOB chunks.
C.It returns both BasicFile and SecureFile LOB space usage for only nonpartitioned tables.
D.It returns both BasicFile and SecureFile LOB space usage for both partitioned and nonpartitioned tables.
正确答案是B