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: Surgery
[{'content': 'Which of the following is not a risk factor for transitional cell carcinoma of\nurinary bladder \nSelect and explain. \nA. Smoking, B. Schistosomiasis, C. Aniline dye, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Risk factors of TCC include\n\nSmoking\nAniline dye\nSchistosomiasis\nRadiation\nCyclophosphamid', 'role': 'assistant'}]