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Refer to the information provided in the table below. In this economy, there are only lump- sum tax and there is no progressive tax rate (i.e. the marginal/progressive tax rate is 0, or t=0). Aggregate Income Aggregate Consumption $ billion) ($ billion) 0 100 100 175 200 250 300 325 400 400 12.) The equation for the aggregate consumption function is: A) C=100 +0.2Yd B) C=100 +0.25Yd C) C = 100 + 0.5Yd D) C=100 +0.75Yd 13.) Refer to the information provided in the table above. The economy's marginal propensity to consume must be: A) 0.2 B) 0.25 C) 0.5 D) 0.75