Which two statements are true about a full outer join?
A. It includes rows that are returned by an inner join.
B. It returns only unmatched rows from both tables being joined.
C. It includes rows that are returned by a Cartesian product.
D. It returns matched and unmatched rows from both tables being joined.
E. The Oracle join operator (+) must be used on both sides of the join condition in the WHERE clause.
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