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 Maxillary Molar shows heart shape occlusal morphology \nSelect and explain. \nA. 1st molar, B. 2nd molar, C. 3rd molar, D. None of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]