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	<b>QUESTION 168	</b>
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<p>Which two statements about subqueries are true? (Choose two.) </p><table border="1" bordercolor="gray" width="665">
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			<p><b><input type="checkbox" name="AN" value="A">  A.</b></p>
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			<p> A subquery should retrieve only one row. 
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			<p><b><input type="checkbox" name="AN" value="B">  B.</b></p>
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			<p>   A subquery can retrieve zero or more rows. 
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			<p><b><input type="checkbox" name="AN" value="C">  C.</b></p>
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			<p>   A subquery can be used only in SQL query statements. 
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			<p><b><input type="checkbox" name="AN" value="D">  D.</b></p>
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			<p>   Subqueries CANNOT be nested by more than two levels. 
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			<p><b><input type="checkbox" name="AN" value="E">  E.</b></p>
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			<p>   A subquery CANNOT be used in an SQL query statement that uses group functions. 
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			<p><b><input type="checkbox" name="AN" value="F">  F.</b></p>
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			<p>   When a subquery is used with an inequality comparison operator in the outer SQL statement, the column list in the SELECT clause of the subquery should contain only one column.</b></p>
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