Which of the Following Was a Challenge of School Integration

Which of the following was a challenge of school integration following Brown v.Board of Education?

A) Brown v.Board of Education did not clearly prohibit purposeful discrimination on the basis of race.
B) Brown v.Board of Education did not provide for specific methods to achieve school integration.
C) Brown v.Board of Education did not achieve enough civil support for it to be enforced.
D) Brown v.Board of Education was not followed by subsequent court decisions.