Which of the following would supply dollars to the foreign-exchange market? The sale of U.S. automobiles to a Mexican consumer The spending of British tourists in the United States The purchase of Canadian oil by a U.S. refiner The sale of a U.S. corporation to a Saudi Arabian investor Choose the most correct answer by clicking a button, or by typing a letter from the keyboard and pressing the tab key. With freely-floating exchange rates, an increase in tariffs will tend to cause: imports to increase. exports to decrease. a rise in the price of foreign currency. an outflow of gold. Choose the most correct answer by clicking a button, or by typing a letter from the keyboard and pressing the tab key.