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
[{'content': 'Fats are stained by: CMC (Vellore) 14 \nSelect and explain. \nA. Hematoxylin and eosin, B. Oil red O, C. Periodic Acid Schiff, D. GMS Silver Stain', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Oil red O', 'role': 'assistant'}]