Under a system of floating Exchange rates, relatively low productivity and high inflation rates in the United States result in:

An increase in the demand for foreign currency, a decrease in the supply of foreign currency, and a depreciación in the dollar

An increase in the demand for foreign currency, an increase in the supply of foreign currency, and an appreciation in the dollar

A decrease in the demand for foreign currency, a decrease in the supply of foreign currency, and a depreciation in thedollar

A decrease in the demand for foreign currency, an increase in the supply of foreign currency, and an appreciation in the dollar