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': "According to Miller's classification of increased tooth mobility, grade 3 would be \nSelect and explain. \nA. 0.1 to 0.2 mm in horizontal direction, B. Upto 1mm in horizontal direction, C. > lmm in horizontal direction, D. Mobility in horizontal and vertical direction", 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]