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Which two statements are true regarding views?()

AA subquery that defines a view cannot include the GROUP BY clause 

BA view that is created with the subquery having the DISTINCT keyword can be updated 

CA view that is created with the subquery having the pseudo column ROWNUM keyword cannot be updated 

DA data manipulation language (DML) operation can be performed on a view that is created with the subquery having all the NOT NULL columns of a table

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