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 main disadvantage of Florida probe system is \nSelect and explain. \nA. Inconsistent probing force, B. Does not measure extent of plaque, C. Non reproducibility, D. Lack of tactile sensitivity', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]