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 tooth has single antagonist tooth \nSelect and explain. \nA. A Maxillary CI and mandibular LI, B. Mandibular CI and maxillary 3rd molar, C. Mandibular 3rd molar and mandibular CI, D. Maxillary 3rd molar and maxillary CI', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]