gdp c s ig $100 $100 $0 $80 200 160 40 80 300 220 80 80 400 280 120 80 500 340 160 80 600 400 200 80 700 460 240 80 refer to the accompanying information for a closed economy. if both government spending and taxes are zero, the equilibrium level of gdp is group of answer choices $500. $400. $200. $300.