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': 'Leeway space is: \nSelect and explain. \nA. 1.7 mm and greater in mandible, B. 1.7 mm and least in mandible, C. 3.4 mm and greater in mandible, D. 3.4 mm and least in mandible', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]