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: Pathology
[{'content': 'Which of the following teeth is most Likely to be congenitally \nmissing? \nSelect and explain. \nA. Maxi. central incisor, B. Mandibular canine, C. Mand. second premolar, D. Maxillary first premolar', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]