Most Economists Believe That the Downward-Sloping Phillips Curve Shifts So

Most economists believe that the downward-sloping Phillips curve shifts so that, in the long run,

A) inflation and unemployment increase at the same rate.
B) the tradeoff between inflation and unemployment disappears.
C) the tradeoff between inflation and unemployment increases.
D) the tradeoff between inflation and unemployment is constant.
E) the positive relationship between inflation and unemployment disappears.