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: Pharmacology
[{'content': 'A Hemophiliac patient has rheumatoid arthritis. Which drug might be prescribed to relieve the pain? \nSelect and explain. \nA. Acetaminophen, B. Acetylsalicylic acid, C. Phenylbutazone, D. Naproxen', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]