This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition, Subject name: Pediatrics
[{'content': 'Which of the following is an age-dependent index? \nSelect and explain. \nA. Kanawati and Mclaren index, B. Jellife ratio, C. Rao and Singh index, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: All of the indices listed, namely Kanawati and Mclaren index, Jellife ratio, and Rao and Singh index , are age-independent indices Age-independent indices: Kanawati and Mclaren Index: Mid-arm circumference/Head circumference Jellife Ratio: Head circumference/Chest circumference Rao and Singh index: Weight(Kg) * 100/height2 (cm) Dugdale Index: Weight(Kg)/height1.6 (cm) Ref: Ghai Essentials Pediatrics 8th edition pgno: 97', 'role': 'assistant'}]