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': 'National Family Health Survey 3 was carried out in: \nSelect and explain. \nA. 1998-1999, B. 2001-2002, C. 2003-2004, D. 2005-2006', 'role': 'user'}, {'content': 'Answer: D \nExplanation: 2005-2006', 'role': 'assistant'}]