Which Factor Is Most Compelling of an Explanation-And Supported by Measurable

Which factor is most compelling of an explanation-and supported by measurable data-for different racial and ethnic categories of people have higher or lower average incomes?

A) Financial affluence is more important to some groups of people, so they pursue it more energetically.
B) Historic and contemporary patterns of racism have given some groups of people more access to opportunities than others, and even if barriers to financial success continue to fall-such as the end of slavery or the prohibition of segregation-the disparity of the past continues to influence the present.
C) Different racial and ethnic groups have different values, and some of those values are more likely to lead to economic success.
D) Different racial and ethnic groups have different capabilities, which results in different levels of success.