For the same exercise as a. Consider the basic Neoclassical model. Graphically analyze the effects of a decrease in1tA + . Clearly describe how each endogenous variable changes. b. For the same exercise as part a, for the open economy how do the real exchange rate, the nominal exchange rate and net exports change? (You do not have to draw the graphs for this part, just answer the questions about the direction of change for these three variables.)part a, for the open economy how do the real exchange rate, the nominal exchange rate and net exports change? (You do not have to draw the graphs for this part, just answer the questions about the direction of change for these three variables.)