From the Role of Monetary Policy, Milton Friedman notes: The "natural rate of unemployment," in other words, is the level that would be ground out by the Walrasian system of general equilibrium equations, provided there is imbedded in them the actual structural characteristics of the labor and. commodity markets, including market imperfections, stochastic variability in demands and supplies, the cost of gathering information about job vacancies and labor availabilities, the costs of mobility, and so on." Which of the following best explains how this passage undermines the original Keynesian notion that any measured unemployment must mean the economy is in a recession? 0 A. Frictional unemployment exists in the real world due to inefficiencies in markets. 0 B. The unemployment rate overlooks the employment rate and as a result the equilibrium level of unemployment gets understated O C. Keynes' was incorrectly assuming that full employment required the \"children and elderly" should be employed when they legally cannot be employed or are incapable of employment. 0 D. Unemployment cannot exist if the economy is in a state of "general equilibrium" 0 E. The natural rate of unemployment does not exist when the economy reaches full employment