4. Assume that the level of autonomous consumption in an economy equals 400, the level of planned investment = 200, G = 0, T = 0, NX = 0, and the marginal propensity to consume is 0.6. Refer to the information above. What is the level of consumption when the level of income equals 2000? a. 600 b. 1000 C. 1600 d. 2000