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': "Classify the following according to Kennedy's classification \nSelect and explain. \nA. Class III maxillary arch, B. Class III mandibular arch, C. Class II mandibular arch, D. Class IV mandibular arch", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]