Based on the justification of Chief Justice Taney in the Dred Scott ruling, the reasons the Supreme Court provided were:
B. Dredd Scott had no right to sue because he was not a citizen.
D. Dredd Scott had no rights to which white men had to respect.
These options directly reflect the Court's reasoning regarding Scott's status and rights under the law. Options A, C, and E do not align with the ruling made by the Court.