What Do the Data for the Period of 1968 Through

Multiple Choice

What do the data for the period of 1968 through 1973 demonstrate?

A) that there is a short-run tradeoff between inflation and unemployment
B) that a supply shock can disrupt the short-run tradeoff between inflation and unemployment
C) that there is a long-run tradeoff between inflation and unemployment
D) that a demand shock can disrupt the short-run tradeoff between inflation and unemployment