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: Microbiology
[{'content': 'Stain for the diagnosis of tuberculosis - \nSelect and explain. \nA. Auramine-rhadomine, B. India-ink, C. Geimsa stain, D. All', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Auramine-rhodamine", 'role': 'assistant'}]