What was the Supreme Court's decision in the 1896 Plessy v. Ferguson case?

A.
The Declaration of Independence implies that Americans should be united.

B.
People must be considered equal under the law from the 14th Amendment.

C.*
Segregation should be considered a matter for states to decide, not the federal government.

D.
Segregation is permitted as long as equal facilities are provided for both parties.

D. Segregation is permitted as long as equal facilities are provided for both parties.