This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chemotherapy, Subject name: Pharmacology
[{'content': 'Proliferation independent agents include all the following except \nSelect and explain. \nA. Vincristine, B. Carmustine, C. Melphalan, D. Cyclophosphamide', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ref: KDT 6/e p821,882 Proliferation independent means cell cycle nonspecific agents', 'role': 'assistant'}]