According to monetarists, changes in the money supply have long-lasting effects on the equilibrium level of real GDP

The theory of purchasing power parity cannot fully explain exchange rate movements in the short run because

A) all goods are identical even if produced in different countries. B) monetary policy differs across countries. C) some goods are not traded between countries. D) fiscal policy differs across countries.

In an "underground economy," the production of goods and services

A) is not measured or included in GDP. B) is not measured but is included in GDP. C) is measured and included in GDP. D) is usually too insignificant to be included in GDP.