The Fed's Interest Rate Response to the Rising Output Ratio

Multiple Choice

The Fed's interest rate response to the rising output ratio experienced from 1997 to 1999 is explained by

A) beneficial supply shocks which pushed down the inflation rate.
B) the Fed's efforts to help end the Asian financial crisis
C) the Fed's uncertainty about the concepts of the natural level of output and natural rate of unemployment.
D) All of the above.