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': 'Dye used in fluorescent microscopy - \nSelect and explain. \nA. Thioflavin T, B. Congo red, C. Brilliant blue, D. Auramine', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is `D' i.e., Auramine", 'role': 'assistant'}]