One harmful consequence of using monetary policy to lower the rate of unemployment below its natural rate is that it causes
A) An upward shift in the Phillips curve in the long run.
B) A movement rightward along the Phillips curve in the long run.
C) A decrease in transfer payments in the short run.
D) An increase in tax revenue in the short run.
E) Inefficient businesses to survive and prosper since the economy is performing "too well."