Which of the Following Statements About the Association Between Race

Which of the following statements about the association between race and IQ is true?

A) Differences between African-American and Euro- American children are greater than differences within each group.
B) Much of the difference between the average IQ for African-American children and the average IQ for Euro-American children can be accounted for by differences in social class.
C) Few Euro-American children have IQs lower than the average African-American child, and few African- American children have IQs higher than the average Euro-American child.
D) There are no differences in the IQs of African- American and Euro-American children.