![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
Which of the following about the Phillips curve is NOT correct?
A.
It shows the relation between GDP growth and unemployment.
B.
It has been redefined as a relation between the change in the rate of inflation and the unemployment rate.
C.
It was first explored by W. Phillips.
D.
The curve is downward sloping.