This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NCDs: CHD, HTN, DM, RF, Cancers, Obesity, Blindness, Subject name: Social & Preventive Medicine
[{'content': 'Body mass index of a person whose weight is 89 kg and height is 172 cms is: \nSelect and explain. \nA. 27, B. 30, C. 33, D. 36', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Body mass index : Is an indicator of obesity: where weight is in kilograms and height is in metres . BMI = weight (kg) /height (m2) = 89/1.72x1.72 = 30', 'role': 'assistant'}]