The Long-Run Phillips Curve Applies When the Economy Is at Full

The long-run Phillips curve applies when the economy is at full employment, so the long-run Phillips curve is ________, which demonstrates that changes in the inflation rate ________ effect on unemployment.

A) vertical; have an
B) an upward-sloping straight line with a 45° slope; have an
C) vertical; have no
D) horizontal; have no
E) a downward-sloping straight line with a 45° slope; have an