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
Severe acute malnutrition, arm circumference is less than (in cm) ? 
Select and explain. 
A. 12.5, B. 13.5, C. 12, D. 11.5
D: 11.5
Answer: D: 11.5 
Explanation: Ans. is 'd' i.e., 11.5 Weight-for-height -3 Z-score, or Mid-upper-arccccfm circumference <115 mm, or Presence of bilateral oedema