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: Dental
[{'content': 'Index used to measure acute and chronic malnutrition can be: \nSelect and explain. \nA. Height with weight, B. Weight with age, C. Height with age, D. Body mass index', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]