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': 'All embrasure spaces are reflections of the \nSelect and explain. \nA. Form of the teeth involved, B. Size of the teeth involved, C. Eruption sequence involved, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]