This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'The best growth cha indicator in patients with acute malnutrition is: \nSelect and explain. \nA. Body mass index (BMI), B. Body weight, C. weight for age, D. weight for height', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Height-for-age (or length-for-age for children <2 yr) is a measure of linear growth, and a deficit represents the cumulative impact of adverse events, usually in the first 1,000 days from conception, that result in stunting, or chronic malnutrition. A low height-for-age typically reflects socioeconomic disadvantage. A low weight-for-height, or wasting, usually indicates acute malnutrition. Conversely, a high weight-for-height indicates overweight. Weight-for-age is the most commonly used index of nutritional status, although a low value has limited clinical significance as it does not differentiate between wasting and stunting. Weight-for-age has the advantage of being somewhat easier to measure than indices that require height measurements. In humanitarian emergencies and some field settings, mid-upper arm circumference is used for screening wasted children .', 'role': 'assistant'}]