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: Social & Preventive Medicine
A 2 year old child has a weight of 6.4 kg. and has vitamin A deficiency. What is the grade of malnutrition in this child – 
Select and explain. 
A. First degree, B. Second degree, C. Third degree, D. Fourth degree
C: Third degree
Answer: C: Third degree 
Explanation: Normal expected weight at 2 years of age is 12 kg.
This child has a weight of 6.4 kg. i.e. 53.3% of the expected.
So, this child is having grade III(51- 61 % of expected weight) malnutrition.