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 our National Population Policy 2000, the long-term objective is to achieve the population stability by which one of the following years? \nSelect and explain. \nA. 2025, B. 2035, C. 2045, D. 2055', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]