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': 'The following are rheumatoid disease modifying drugs except- \nSelect and explain. \nA. Chloroquine, B. Gold, C. Penicillamine, D. BAL', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]