The World Trade Organization (WTO) is an international organization dedicated to erecting trade barriers between nations

As a group, people with high incomes are likely to have

A) greater-than-average family inheritances and greater than average SAT scores. B) greater-than-average holdings of stocks and bonds and lower-than-average productivity. C) a stable marriage and no children. D) greater-than-average productivity and greater-than-average amounts of capital.

If both the price level and nominal incomes change by the same percentage: 

A. real GDP will remain constant. B. the aggregate supply curve will be upward-sloping. C. profit margins will change in real terms. D. the long-run aggregate supply curve will be horizontal.