Back to Assignment Attempts 0 Keep the Highest 0 / 1 2. Introduction to the foreign-currency exchange market In an open economy, why is the supply curve for dollars in the foreign-currency exchange market vertical? O Net capital outflow is determined by real GDP, not the real exchange rate. O Net capital outflow is determined by the real interest rate, not the real exchange rate. Net capital outflow equals net exports. O Net capital outflow is extremely sensitive to small changes in the real exchange rate