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: Radiology
[{'content': 'Not a radiosensitizing drug ? \nSelect and explain. \nA. 5-Fu, B. BUDR, C. Cyclophosphamide, D. Hydroxyrea', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is'c'i.e., Cyclophosphamide lRef. Cancer nursing: Principles & practice p. 256Clsplatin and 5-FU - Most common radiosensitive drugs.", 'role': 'assistant'}]