Many Researchers Have Noted That Many of the Larger Minority

Multiple Choice

Many researchers have noted that many of the larger minority groups in the United States (such as black,Native American,and Hispanic populations) are overrepresented in the lower class.As a consequence,how do those researchers recommend that we think about ethnic differences in IQ

A)  as an interaction of governmental policies and regulations 
B)  as an interaction of social class and genetic differences 
C)  as the result of social class differences in experience 
D)  as the result of genetic differences between ethnic groups