This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Medicine
[{'content': 'Pulmonary fibrosis is associated with the use of \nSelect and explain. \nA. Bleomycin, B. Cisplatin, C. Methotrexate, D. Actinomycin D', 'role': 'user'}, {'content': 'Answer: A \nExplanation: question repeated', 'role': 'assistant'}]