If the Natural Unemployment Rate Falls

Multiple Choice

If the natural unemployment rate falls

A) the short- run Phillips curve shifts rightward.
B) the long- run Phillips curve shifts rightward and the short- run Phillips curve does not change.
C) the long- run Phillips curve shifts leftward and the short- run Phillips curve does not change.
D) the short- run and long- run Phillips curves both shift leftward.
E) the short- run and long- run Phillips curves both shift rightward.