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: Pediatrics
Which among the following is an age - independent index 
Select and explain. 
A. Dugdale index, B. Kanawati and Mclaren index, C. All of the above, D. None of the above
C: All of the above
Answer: C: All of the above 
Explanation: Age - independent indices