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: Unknown
[{'content': 'The staining useful for antemorten diagnosis of rabies is - \nSelect and explain. \nA. Seller, B. Macchiavillo, C. Giemsa, D. Fluorescent', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans-A', 'role': 'assistant'}]