Clearly explain the transmission mechanism of a change in the rate of interest on a country's Balance of Trade. Assume that you are analyzing this mechanism in the case of a country that has an open economy (trades with the rest of the world) and that the monetary authorities decide to lower the rate of interest 'r' to stimulate real output and employment. To begin with, assume that this country is operating at less-than full employment. How does a fall in 'r' affect a country that is a net exporter ? What would happen if this country is a net importer ? Finally, how does a fall in 'r' affect the rate of inflation, other things being constant