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: Dental
[{'content': 'Amount of infectious waste among hospital waste is: \nSelect and explain. \nA. 1.50%, B. 4.50%, C. 25%, D. 12%', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]