Part B: Fiscal Policy Consider an economy existing for four periods following the government budget constraint as follows: Bt+1=(1+i)Bt+GtTt a) Define each of the variables above and explain, in words, why the equality holds. Re-write this budget constraint during each of the four periods that the economy exists. Part B: Fiscal Policy Consider an economy existing for four periods following the government budget constraint as follows: Bt+1=(1+i)Bt+GtTt a) Define each of the variables above and explain, in words, why the equality holds. Re-write this budget constraint during each of the four periods that the economy exists