This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urinary Bladder, Subject name: Surgery
[{'content': 'Which of the following are suspected carcinogens for bladder carcinoma? \nSelect and explain. \nA. Phenacitin, B. Tobacco, C. Aniline dye, D. All the above', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., All the above Risk factors for transitional cell carcinoma (TCC) of bladder -1. Smoking - Major etiological factor.2. Occupational exposure to chemicals - Nephthylamine benzidine, aniline dyes, acrolein.3. Schistosoma haematobium (Bilharziasis) - It is a risk factor for both TCC & SCC.4. Drugs - Phenacetin5. Cyclophosphamide therapy6. Pelvic irradiations", 'role': 'assistant'}]