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 is defined as 
Select and explain. 
A. Weight / Height < - 2SD, B. Mid - Upper arm circumference < 12.5 cm, C. Presence of bipedal edema, D. Weight / age < - 3SD
C: Presence of bipedal edema
Answer: C: Presence of bipedal edema 
Explanation: Severe acute malnutition in children of 6 months - 5 year is defined as 
a) Weight / Height < - 3SD
b) Mid - upper arm circumference < 11.5 cm
c) Presence of bipedal edema