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
Pulmonary fibrosis is seen with : 
Select and explain. 
A. Bleomycin, B. Cisplatin, C. Methotrexate, D. Actinomycin D
A: Bleomycin
Answer: A: Bleomycin 
Explanation: Bleomycin is a marrow sparing drug but it causes pulmonary fibrosis and skin toxicity as adverse effects. Another antican­cer drug causing pulmonary fibrosis is busulfan.