This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bladder Cancer, Subject name: Surgery
[{'content': 'All of the following are causes of Urothelial Carcinomas Except - \nSelect and explain. \nA. Smoking, B. Industrial solvents, C. Exposure to thorotrast, D. Alcohol consumption', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Alcohol consumption Etiology of transitional cell Cao Smokingo Industrial dyes or solventso Excessive analgesic intakeo Balkan nephropathy, ando Those exposed to Thorotrast, (a contrast agent previously used for retrograde pyelography)", 'role': 'assistant'}]