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If the demand of bonds is greater than the supply of bonds, we expect the A. investment expenditure would fall. B. investment expenditure would rise. C. investment expenditure would stay the same. D. none of the above.In the classical model, suppose the consumption function is: C = 0.8*( Y - T); the full employment real GDP is 100, G = 10, and T = 0, then in the goods market equilibrium, investment expenditure must be: A 10. B. 5. C. D. none of the above