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
Indicator of moderate to severe malnutritions is - 
Select and explain. 
A. Serum transferrin 160, B. Body mass index 19, C. Albumin 2.1 g/dl, D. Transthyretin
C: Albumin 2.1 g/dl
Answer: C: Albumin 2.1 g/dl 
Explanation: Ans. is 'c' i.e., Albumin 2.1 g/dI