Historically,which of the Following Is/are (A)major Factor(s)in the Lower Educational

Multiple Choice

Historically,which of the following is/are (a) major factor(s) in the lower educational attainment of blacks in comparison to whites in the United States?

A) Most blacks lived in the South.
B) Blacks in the North competed with immigrant groups.
C) Blacks have been subject to discrimination.
D) All of the above
E) None of the above