Examine the statement：
DROP TABLESPACE IND2 
INCLUDING CONTENTS 
AND DATAFILES；  
What is the result of the statement？（）

A.It performs a merge join of the row from T2 only if it doesn’t exist in the T1 table. 
B.It creates a natural join of tables T1 and T2 for all columns that have the same name. 
C.It creates a Cartesian product of table T1 and table T2 for all columns that have the same name. 
D.For each row from T2, it updates the row if it exists within table T1, otherwise it inserts the row into T1.

A.RAW
B.LONG
C.VARCHAR
D.LONG RAW

A.Bitmap indexes.
B.Reverse key indexes.
C.Function-based indexes.
D.Key-compressed indexes on regular tables.
E.Key-compressed indexes on IOT （including secondary indexes）