A proposition about the relationship between two variables that can be proven false is called:

When the United States engaged in quantitative easing from 2008 to 2014, why didn't the money supply rise sharply?

A) Foreigners wanted all the new dollars created by the Federal Reserve. B) Banks held the increased monetary base as excess reserves. C) The Fed offset the increased monetary base by raising reserve requirements. D) The Fed offset the increased monetary base by buying foreign currency.

Using Figure 1 above, if the aggregate demand curve shifts from AD3 to AD2 the result in the short run would be:

A. P3 and Y1. B. P2 and Y1. C. P2 and Y3. D. P1 and Y2.