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': 'C shaped morphological appearance is seen in \nSelect and explain. \nA. Maxillary 1st premolar, B. Mandibular 1st premolar, C. Maxillary 1st molar, D. Mandibular 2nd molar', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]