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': "If odd's ration is one then \nSelect and explain. \nA. High association, B. Low association, C. False statement, D. None", 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]