You've given the following information about Country A. Disposable Income (Yd) Consumption (C) 0 400 Investment : I = 200 Government spending: G = 10 100 480 200 560 300 640 Find MPC, autonomous consumption and derive the consumption function. Find MPS and derive the savings function. Determine the equilibrium level of national income using the following the approaches. Show all working. o Income expenditure approach o Injection - withdrawal approach