To answer the question: Can money buy happiness?, a study of the relationship between GDP per capita and satisfaction with life demonstrates that:
选项：

A:there is an inverse relationship between money and happiness. People in countries with lower GDP per capita tend to be happier than people in countries with higher GDP per capita.
B:there is a direct relationship between money and happiness. People in countries with higher GDP per capita tend to be happier than people in countries with lower GDP per capita.
C:there is no apparent relationship between money and happiness, at least not when GDP per capita is compared to a country's corresponding level of satisfaction with life.
D:things other than money appear to be more important than GDP per capita in determining the level of satisfaction with life.