In the Plessy V. Ferguson Supreme Court case, what did the court rule?

B. segregation was legal as long as facilities were separate but equal.

Just took test.

Rejecting Plessy's argument that his constitutional rights were violated, the Supreme Court ruled that a law that "implies merely a legal distinction" between whites and blacks was not unconstitutional. As a result, restrictive Jim Crow legislation and separate public accommodations based on race became commonplace.