This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition, Food Security, and Health, Subject name: Pediatrics
Best marker for chronic PEM is - 
Select and explain. 
A. Weight for age, B. Height for age, C. Weight for Height, D. Head circumference
B: Height for age
Answer: B: Height for age 
Explanation: Ans. is 'b' i.e., Height for age Assessment of PEM* Weight for age = Acute* Height for age = Chronic* Weight for Height = Acute on chronicAge dependent factors* Weight# Height* Head circumference# Chest circumferenceAge independent factor* Mid arm circumference# Kanawati index* Me Laren's index# Quae stick* Shakir tape# Skin fold thickness* Rao & Singh# Dugdale* Jelleff's ration