Which slot should it be in?

[Cardioversion]

Ok this is confusing which slot should my video card be in on this board? a8n sli deluxe? the one closest to the cpu? or the one farthest away? I noted the my sli chip was set to dual from the factory. The book said it was set to single by default from the factory. I read the manuel numerous times and it does not say which slot it should be in thank you.