Which of the Following Statements Is True of the U

Multiple Choice

Which of the following statements is true of the U.S. experience with regards to the Phillips curve hypothesis?
I. Annual observations of inflation and unemployment from 1961 to 2015 seem consistent with a Phillips curve.
II. A Phillips curve relationship best fits observations of inflation and unemployment in the 1960s.
III. The Phillips curve relationship in the inflation and unemployment data began to disintegrate in the 1970s.

A) I only
B) II only
C) III only
D) II and III only