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 embrasure areas in the following areas are continuous \nSelect and explain. \nA. Labial and Lingual, B. Lingual and Occlusal, C. Incisal and Occlusal, D. Labial and Occlusal', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]