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: Social & Preventive Medicine
[{'content': 'Amount of waste infectious produced in hospitals? \nSelect and explain. \nA. 45%, B. 65%, C. 80%, D. 100%', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., 45%", 'role': 'assistant'}]