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': 'Degree of mental disability of a child (low IQ), who is able to speak well enough for most  communication needs, is classiﬁed as: \nSelect and explain. \nA. Moderate, B. Mild, C. Severe, D. Profound', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Classification of Intellectual Disability', 'role': 'assistant'}]