In light of the numbers/equations above, which of the following is the economy's demand-side equilibrium equation?a) E=0.75*Yb) E=Yc) E=0.25*Yd) E=300 + 0.75*DI

Consider an economy described by the following equations: Consumption function: C = 200 + 0.75*DI Disposable Income: DI = Y-T Taxes - Transfers: T = 1200 Investment: 900 Government spending G = 1300 Net Exports: NX = -100