This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Non communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'Overweight BMI?? \nSelect and explain. \nA. 25 to 29.99, B. 15-18, C. 18-20, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ref-Park&;s textbook of preventive and social medicine 24th edition. .', 'role': 'assistant'}]