A non-correlated subquery can be defined as, (Choose the best answer.)

A non-correlated subquery can be defined as, (Choose the best answer.)
A. 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.
B. A set of sequential queries, all of which must return values from the same table.
C. A set of sequential queries, all of which must always return a single value.
D. A SELECT statement that can be embedded in a clause of another SELECT statement only.

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