They are not exclusive. But 0.0% of Icelanders 25 or younger believe that God had anything to do with the creation of the universe.

Additionally - as I'd like to argue - is that it might be a divine being or a being of sorts that ignited the Big Bang, but it is very unlikely to be God, i.e. the Christian God. So the Icelanders' opinion seem very reasonable to me.

Particularly if the survey was this simple.