If the expected inflation rate increases and the natural rate of unemployment remains constant, then _______.A. the long-run Phillips curve shifts rightward and the short-run Phillips curve shifts rightward.B. neither the long-run Phillips curve nor the short-run Phillips curve shifts.C. the short-run Phillips curve shifts upward and the long-run Phillips curve does not shift.D. the long-run Phillips curve shifts rightward and the short-run Phillips curve does not shift.
