Which two statements are true regarding views? (Choose two.)
A. The WITH CHECK OPTION constraint can be used in a view definition to restrict the columns displayed through the view.
B. The OR REPLACE option is used to change the definition of an existing view without dropping and re-creating it.
C. Rows cannot be deleted through a view if the view definition contains the DISTINCT keyword.
D. Rows added through a view are deleted from the table automatically when the view is dropped.
E. A simple view in which column aliases have been used cannot be updated.
F. A subquery used in a complex view definition cannot contain group functions or joins.
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