Calculate the resulting change in GDP for each of the following MPCs when the government increases its spending by $250 billion. Instructions: Round your answers to one decimal place. a. The marginal propensity to consume (MPC) = 0.2. The change in GDP is $ billion. b. The marginal propensity to consume (MPC) = 0.5. The change in GDP is $ billion. c. The marginal propensity to consume (MPC) = 0.8. The change in GDP is $ billion.