Which sentence correct uses mls in-text citation?

The following sentence correctly uses MLS in-text citation:

Page number is enough for citation as author is already mentioned.

The answer is that separate facilities for white and black people was constitutional as long as the facilities were equal.

Explanation:

Separate but equal was a legal doctrine in American constitutional law that justified systems of segregation.

Under this doctrine, services, facilities and public accommodations were allowed to be separated by race, on the condition that the quality of each group’s public facilities was to remain equal.

Although the Constitutional doctrine required equality, the facilities and social services offered to African-Americans were almost always of lower quality than those offered to white Americans.

The doctrine of “separate but equal” was legitimized in the 1896 Supreme Court case, Plessy v. Ferguson.