What is the correct expression language value you should have for the Action Listener Property?

You have a page containing all the Department items. It also includes a button to save the
changes. What is the correct expression language value you should have for the Action Listener
Property?

A.
#{!bindings.Commit.execute)

B.
# {bindings. Commit.current Row}

C.
#{bindings.Commit.execute}

D.
#{bindings- Save.execute}

E.
# {bindings. Comnit. immediate}

Explanation:
http://books.google.com.pk/books?id=TyLqw6i6BtYC&pg=PA432&lpg=PA432&dq=action+listener
+property+%23%7Bbindings.Commit.execute%7D&source=bl&ots=PEDtbG-uOm&sig=k38P4oDp1oiQzDYKFlF7nczAE1A&hl=en&ei=GmjBTtn5GsPKsgaCw8CeAw&sa=X&oi
=book_result&ct=result&resnum=5&ved=0CDgQ6AEwBA#v=onepage&q&f=false