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': 'Venoocclusive disease of the liver is caused by: \nSelect and explain. \nA. Cyclophosphamide, B. Melphalan, C. Both, D. None', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Potential target for sinusoidal lining cells; when these are injured, such as by high-dose chemotherapeutic agents (e.g., cyclophosphamide, melphalan, busulfan) administered prior to bone marrow transplantation, venoocclusive disease can result. Reference: Harrisons Principles of Internal Medicine, 18th Edition, Page 2560', 'role': 'assistant'}]