Suppose the following information is given about a hypothetical economy : C = 200 + 0.75 Y (where, C = Consumption and Y = Income) I_0 = 300 (I_0 = Autonomous Investment) Calculate the following on the basis of the given information : (a) Equilibrium Level of Income (b) Aggregate Demand at Equilibrium Level of Income (c) Marginal Propensity to Save