17. Refer to the graph above to answer this question. What does this graph indicate? g. That Y1, Y2 and Y3 could all be equilibrium levels of real GDP. That Y2 is the equilibrium level of real GDP. That government spending and the size of the budget surplus or deficit are unrelated. That net tax revenues depend on tax rates but not on the level of real GDP. ii. That the budget line is unrelated to NTR