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: Medicine
[{'content': 'All of the following statements about primary Gouty arthritis are true, Except - \nSelect and explain. \nA. 90% of cases are caused by over production of uric acid, B. Uric acid levels may be normal at the time of an acute attack, C. Men are more commonly affected than women (Male > Females), D. Definitive diagnosis requires aspiration of synovial fluid', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]