試題詳解

38. Refer to Figure 6. A decrease in Y from Y₁ to Y₂ is explained as follows:
(A) The Federal Reserve increases the money supply, causing the money-demand curve to shift from MD₁ to MD₂; this shift of MD causes r to increase from r1 to r2; and this increase in r causes Y to decrease from Y₁ to Y₂.
(B) An increase in P from P₁ to P₂ causes the money-demand curve to shift from MD ₁ to MD₂; this shift of MD causes r to increase from ri to re; and this increase in r causes Y to decrease from Y₁ to Y₂.
(C) A decrease in P from P₂ to P₁ causes the money-demand curve to shift from MD₁ to MD₂; this shift of MD causes r₁ to r₂ increase from ri to re; and this increase in r causes Y to decrease from Y₁ to Y₂.
(D) An increase in the price level causes the money-demand curve to shift from MD₂ to MD ₁; this shift of MD causes r to decrease from r₂ to r₁; and this decrease in r causes Y to decrease from Y₁ to Y₂.