By the End of the 1970s, Increases in Both Inflation

Multiple Choice

By the end of the 1970s, increases in both inflation and unemployment suggested _____

A) either that the Phillips curve had shifted outward or that it no longer described economic reality.
B) either that the Phillips curve had shifted inward or that it no longer described economic reality.
C) that the Phillips curve had stayed the same but that it no longer described economic reality.
D) that unemployment increased because aggregate demand fell.
E) that unemployment increased because aggregate supply fell.