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