单选题 According to the passage, all of the following factors have been associated as either a cause or effect of the emergence of segregated black neighborhoods EXCEPT

• (A) The failure of the educational system to help improve blacks' economic status
• (B) Political apathy on the of the authorities to solve the problem of segregation
• (C) A preference on the part of blacks concerning where they choose to live
• (D) Rising rate of unemployment among the black community
• (E) Racial conflict between the black community and other communities