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': 'The Y shaped central developmental groove is most likely found on which of the following premolars? \nSelect and explain. \nA. Maxillary first., B. Mandibular first., C. Maxillary second., D. Mandibular second.', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Y shaped central developmental groove is found on the mandibular second premolar.', 'role': 'assistant'}]