Because things can vary according to certain criteria and other factors. The price of crude oil does not always impact the final retail price. Richard or the people from Natural Resources Canada can give you more details.
Secondly, when you speak of refineries and provinces, the distribution of refining operations does not constitute a provincial market. We are looking at this in a broader context, because oil can be sent out of the province. Besides, Richard spoke of the number of competitors that could exist on the same market.
Then, you spoke of the profit margins of big companies—