Consider the following Open Economy with the following parameters, in billions: Consumption (C) = 500 + .75(YD). Personal Disposable Income (YD) = Y - T + TR Government Spending (G) = 800. Transfers (TR) = 400. Taxes (T) = (1/3)Y. Investment (l)=400. Exports (X)=200. Imports (IM) 400. In this Economy, Equilibrium Income is ,the Government Budget is and the Government Spending/Investment Multiplier is Select one: a. 3600 billion, balanced, 2 b. 6000 billion, Surplus of 600 billion, 4 c. 3600 billion, Surplus of 80 billion, 4 d. 4500 billion, Surplus of 100 billion, 2.5 e. 2600, Deficit of 333 billion, 4