In 1896, the United States Supreme Court ruled in the Plessy v. Ferguson case. What was that ruling?

A.
African Americans were now citizens and had the right to vote.
B.
All public facilities throughout the South were to be integrated.
C.
Facilities that were "separate but equal" were constitutional.
D.
Slaves could not to sue in court because they were not citizens.

C. Facilities that were "separate but equal" were constitutional.