If the Phillips Curve Represents a "Structural Relationship," Then

Multiple Choice

If the Phillips curve represents a "structural relationship," then

A) the trade-off between unemployment and inflation is permanent.
B) the trade-off between unemployment and inflation holds only for the short run.
C) the trade-off between unemployment and inflation holds in the long run, but not in the short run.
D) the Phillips curve will be vertical in the long run.
E) there will be no trade-off between unemployment and inflation.