This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': "Round to oval cross section of hair is found in which race \nSelect and explain. \nA. Negroid's, B. Mongoloids, C. Caucasoid's, D. All of the above", 'role': 'user'}, {'content': "Answer: C \nExplanation: Race determination from hair RACE CROSS SECTION Negroid's elliptical Caucasoids round to oval Mongoloids cylindrical", 'role': 'assistant'}]