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': 'If a normal SNA = 82°. A patient has SNA = 90°. This suggests: \nSelect and explain. \nA. Maxillary teeth protrusion, B. Maxillary protrusion, C. Mandibular protrusion, D. Mandibular retrusion', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]