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': 'One of the following dental notations is known as universal notation \nSelect and explain. \nA. Zsigmondy notation, B. Cunningham notation, C. Navy notation, D. Palmar notation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]