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Money Supply = 900 Money Demand = 1000 - 100r Investment = 900 - 600r What is the equilibrium Investment, I? O A. 200 O B. 115 O C. 70 OD. 0 O E. 300What decreases the size of the multiplier effect? O A. Income tax rates decrease. O B. Consumers save more and spend less. O C. Consumers save less and spend more. O D. Businesses invest more. O E. Consumers buy fewer imports.Which event has a multiplier effect and increases aggregate demand? O A. increase in exports O B. increase in saving O C. decrease in investment O D. decrease in exports O E. increase in taxes