This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition and health, Subject name: Social & Preventive Medicine
[{'content': 'Based on WHO criteria, severe acute malnutrition is defined as \nSelect and explain. \nA. Weight for age < 1 standard detion, B. Weight for height < 1 standard detion, C. Weight for age < 2 standard detion, D. Weight for age < 3 standard detion', 'role': 'user'}, {'content': 'Answer: D \nExplanation: * Growth cha used in India shows normal zone of weight for age, undernutrition (below 2 SD) and severely malnutrition zone (below 3 SD) * ICDS growth cha based on WHO growth chas Uses of Growth Cha: - * Growth monitoring tool * Diagnostic tool for identifying high risk children * Planning and policy making * Educational tool * Tool for action * Evaluation of corrective measures and impact of a programme * Tool for teaching Ref:- K Park 24th ed; pg num:- 582', 'role': 'assistant'}]