This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Demography, Subject name: Social & Preventive Medicine
[{'content': 'Range of kuppu swami scale for upper middle class: \nSelect and explain. \nA. 26-29, B. 16-25, C. 16-26, D. 26-30', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) 16-25Ref: K. Park 23rd ed. / 690MODIFIED KUPPUSWAMI SCALE: Scale of socio- economic status of urban families, includes Education status of head, occupation status of head, Income per capita.Total score of 3 componentsSocioeconomic class* 26-29* 16-25* 11-15* 05-10* 03-04UpperUpper-middleLower-middleUpper-lowerLower', 'role': 'assistant'}]