This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition, Subject name: Pediatrics
[{'content': 'Which of the following is the best indicator of long-term nutritional status \nSelect and explain. \nA. Mid arm circumference, B. Height for age, C. Weight for age, D. Weight for height', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Stunting or low height for age is an indicator of chronic malnutrition, the result of prolonged food deprivation and /or disease or illness.Ref: Page 95, Ghai Essential Pediatrics; 8th edition', 'role': 'assistant'}]