. If the Federal Reserve raises interest rates in an autonomous tightening ________. A) the MP curve shifts up, there is an upward movement along the IS curve, and the AD curve shifts to the left to a lower level of equilibrium output B) the MP curve shifts down, there is a downward movement along the IS curve and the AD curve shifts to the right to a higher level of equilibrium output C) the MP curve shifts up, there is a downward movement along the IS curve and the AD curve shifts to the right to a lower level of equilibrium output D) the MP curve shifts down, there is an upward movement along the IS curve and the AD curve shifts to the left to a higher level of equilibrium output