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 for 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: Height for age is the best indicator for long-term nutritional status (chronic malnutrition) Weight for age is the most commonly used index, but it doesnot differentiate between wasting and stunting. Hence, it has limited clinical significance A low weight-for-height, or wasting, indicates acute malnutrition Ref: Nelson textbook of pediatrics 21st edition Pgno: 333', 'role': 'assistant'}]