Question: A method to deteremine whether a subquery is correlated or non - correlated is by observing if: ( choose the most comprehensive answer ) a

A method to deteremine whether a subquery is correlated or non-correlated is by observing if: (choose the most comprehensive answer)
a column from the table of the main query is in the subquery
a column in the WHERE clause of the main query is in the subquery
a column in the SELECT clause of the subquery is in the main query
a column in the SELECT clause of the main query is in the subquery

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