This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
Absent fragmented medulla of hair is seen in all except: 
Select and explain. 
A. Mongols, B. Negroid, C. Causcasions, D. Servocrotarians
B: Negroid
Answer: B: Negroid 
Explanation: B i.e. Negros