c为什么不对

问题如下：

Which of the following statements about income inequality is most accurate?

选项：

A.Globalization is one of the drivers of growing wealth inequality

B.Increased income inequality greatly affects society but has little impact on economic growth

C.Across the OECD, the average income of the richest 10% of the population is about twice that of the poorest 10%

解释：

A is correct because the OECD "examines the drivers of growing inequalities, such as globalization, skill-biased technological change and changes in countries’ policy approaches."

B is incorrect because "there is increasing evidence that growing inequality affects economies and societies. Educational opportunities and social mobility may be reduced resulting in a less skilled and less healthy society with lower purchasing power among the lower and middle classes. This limits total economic growth."

C is incorrect because " the average income of the richest 10% of the population is about nine times that of the poorest 10% across the OECD. "