If it makes the statement correct, select "No change is needed." If the statement is incorrect, select the answer choice that makes the statement correct.

This question requires that you evaluate the underlined text to determine if it is correct.
Use indexing to create, remove, or change database objects.
Instructions: Review the underlined text. If it makes the statement correct, select “No change is
needed.” If the statement is incorrect, select the answer choice that makes the statement correct.

A.
No change is needed.

B.
Data manipulation language (DML) statements

C.
Data definition language (DDL) statements

D.
A unique constraint