The following graph shows the domestic supply of and demand for wheat in New Zealand. The world price (Pw) of wheat is $270 per bushel and is
represented by the horizontal black line. Throughout the question, assume that the amount demanded by any one country does not affect the world
price of wheat and that there are no transportation or transaction costs associated with international trade in wheat. Also, assume that domestic
suppliers will satisfy domestic demand as much as possible before any exporting or importing takes place.