This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Concept of health and disease, Subject name: Social & Preventive Medicine
Modified Kuppuswamy scale include all criteria for socioeconomic status except : 
Select and explain. 
A. Income per capita, B. Education of head of family, C. Occupation of head, D. Income of head
D: Income of head
Answer: D: Income of head 
Explanation: Modified Kuppuswamy scale is &;Scale of socioeconomic status of Urban families&;. It comprises of 3 components : Education status of head of family Occupation status of head of family Income per capita per month Ref: Park 25th edition Pgno : 745