Which two statements are true regarding views?

Which two statements are true regarding views? (Choose two.)

A.
A simple view in which column aliases have been used cannot be updated.

B.
A subquery used in a complex view definition cannot contain group functions or joins.

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.
The OR REPLACE option is used to change the definition of an existing view without dropping and re- creating it.

F.
The WITH CHECK OPTION constraint can be used in a view definition to restrict the columns displayed through the view.