Monetary Policy Can

Monetary policy can

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.