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: Physiology
[{'content': 'What is the BMI for obese person: March 2010 \nSelect and explain. \nA. Less than 18.5, B. Less than 18.5, C. 25-29.9, D. More than 30', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D: More than 30', 'role': 'assistant'}]