A non-correlated subquery can be defined as

• A. a set of sequential queries, all of which must always return a single value
• B. a set of sequential queries, all of which must return values from the same table
• C. a select statement that can be embedded in a clause of another select statement only
• D. a set of one or more sequential queries in which generally the result of the inner query is used as the search value in the outer query