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': 'Registration of bihs and death act was passed in: \nSelect and explain. \nA. 1955, B. 1969, C. 1970, D. 1972', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Registration of bihs and deaths act was passed in 1969. Everyone has to register bihs and deaths within 21 days of the event. Ref: National Health Programmes in India, J.Kishore, 10th edition pg: 751', 'role': 'assistant'}]