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 term 'rampant caries' applies to a mouth having: \nSelect and explain. \nA. 5 or more lesions/year, B. 10 or more lesions/year, C. 2 or more lesions/year, D. 12 or more Lesions/year", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]