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': 'As per the Central Bih and Death Registration act, a bih should be registered within: \nSelect and explain. \nA. 7 days, B. 10 days, C. 14 days, D. 21 days', 'role': 'user'}, {'content': 'Answer: D \nExplanation: been changed as per "THE REGISTRATION OF BIHS AND DEATHS(AMENDMENT) BILL, 2012 A BILL fuher to amend the Registration of Bihs and Deaths Act, 1969" Ref: Park, 21st Edition, Page 779', 'role': 'assistant'}]