Most macroeconomic variables that measure some type of income, spending, or production fluctuate closely together

The "rational expectations" school of economists, including Robert Lucas and Thomas Sargent, argue that changes in monetary policy cannot affect unemployment rates in the short run or long run

Indicate whether the statement is true or false

Changes in expectations about future price levels:

A. affect both the long-run aggregate supply curve and the short-run aggregate supply curve. B. do not affect either the long-run aggregate supply or the short-run aggregate supply curve. C. affect only the long-run aggregate supply curve. D. affect only the short-run aggregate supply curve.