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': 'The National Population Policy 2001 aims to achieve net reproduction rate of 1 by the year - \nSelect and explain. \nA. 2005, B. 2010, C. 2015, D. 2050', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]