Answer:
C) 9 percent per year
Explanation:
In the short run an increase in the money supply should increase total output in the economy, decreasing unemployment. Therefore, the larger the increase in the money supply, the larger the decrease in unemployment.
But in the long run it will also increase the inflation rate, increasing the interest rates and producing a boomerang effect which will lower the money supply and increase unemployment.
The Fed should try to maintain low, stable interest rates, not roller coaster type interest rates.