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
[{'content': 'The best parameter for assessment of chronic malnutrition is: \nSelect and explain. \nA. Weight for age, B. Weight for height, C. Height for age, D. Any of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Height for age', 'role': 'assistant'}]