Justice john harlan’s dissent to the court’s decision in plessy v. ferguson was based on what premise? plessy was of mixed heritage. the constitution is “color-blind.” the train cars were not “equal”. the judge’s verdict was biased

The correct answer for the question that is being presented above is this one: "Plessy was of mixed heritage." Justice John Harlan’s dissent to the court’s decision in Plessy v. Ferguson was based on the premise Plessy was of mixed heritage. 

What are the choices?