This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition and health, Subject name: Social & Preventive Medicine
Kanawati index is - 
Select and explain. 
A. Height\/ head circumference, B. Mid arm circumference\/ Head circumference, C. Weight\/ Height, D. Abdominal circumferece\/ Head circumference
B: Mid arm circumference\/ Head circumference
Answer: B: Mid arm circumference\/ Head circumference 
Explanation: KANAWATI INDEX;- Mid arm circumference divided by head circumference. 1. Normal : > 0.31 2. Mild PEM: 0.31-0.28 3. ModeratePEM: 0.28-0.25 4. Severe PEM : <0.25