多选题Which two statements are true regarding views?（）AA subquery that defines a view cannot include the GROUP BY clauseBA view that is created with the subquery having the DISTINCT keyword can be updatedCA view that is created with the subquery having the p

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

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

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

A 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