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: Pathology
[{'content': 'Acridine orange is a fluorescent dye used to bind: \nSelect and explain. \nA. DNA and RNA, B. Protein, C. Lipid, D. Carbohydrates', 'role': 'user'}, {'content': 'Answer: A \nExplanation: . DNA and RNA', 'role': 'assistant'}]