What Was the Supreme Court's Justification in Brown V

What was the Supreme Court's justification in Brown v.Board of Education?

A) The Supreme Court did not have all of the facts when it adopted the separate-but-equal doctrine.-
B) The separate-but-equal doctrine was never intended to apply to people.
C) The quality of life for African Americans in the South had deteriorated considerably since the adoption of the separate-but-equal doctrine.
D) School segregation violated the Fourteenth Amendment's guarantee of equal protection.