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': 'Which of the following is not an indicator for nutritional values? \nSelect and explain. \nA. Vital signs, B. Weight and height, C. Mid arm circumference, D. Prevalence of low birth weight', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]