If the Economy Begins at Its Natural Unemployment Rate and the Fed

If the economy begins at its natural unemployment rate and the Fed surprises people by slowing the inflation rate more than expected, there is a

A) rightward shift of the long-run Phillips curve.
B) movement upward along the short-run Phillips curve.
C) leftward shift of the long-run Phillips curve.
D) movement downward along the short-run Phillips curve.
E) movement downward along the long-run Phillips curve.