6) The normal IS relationship is derived from the goods market clearing condition: Y=C(YT)+I(r)+G. However, we know from our simple 2-pe1iod dynamic optimizing models that consumption does not just depend on current disposable income (Y T). Rather, the consumption function we used says that C = C (W T,Y T,r) so that the IS relationship should be Y =C(WT,YT,f)+1(r)+G. This is useful because it implies that expectations about future taxes and income (as they are incorporated into W and T) will affect C now. Use the IS/LM model with the modications described above to describe how the following events would affect Y, C, I , and r. a) The President passes a \"phased in\" tax cut that will go into effect after a year. b) The public expects a substantial increase in government spending in the future. c) Consider the following two tax policies: (A) raises taxes by AT this year but then returns taxes back to normal in the future. (B) raises taxes permanently by AT . Will these policies affect Aggregate Demand differently? How