Which of the following statements about country wealth is true?

a. China and India have a higher real GDP per capita because of their large populations

b. the united states has the highest real GDP per capital of any country with a population above 50 million

c. there is no connection between a country's real GDP per capita and wealth

d. countries with smaller populations always have higher real GDP per capita

e. everyone in a high real GDP per capita country like Belgium or Qatar is wealthy