A)shift the short-run trade-off between inflation and unemployment if it affects expected inflation.
B)shift the long-run trade-off between inflation and unemployment through changes in cyclical unemployment.
C)shift neither the short-run nor long-run Phillips curve trade-offs between inflation and unemployment.
D)shift both the short-run and long-run trade-offs between inflation and unemployment if changes in policy are credible.
E)shift the short-run trade-off between inflation and unemployment if it affects the expected rate of unemployment.
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