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': "Treatment of 'Thimble bladder' is -a) Anti-tubercular treatment b) Corticosteroidsc) ileocystoplastyd) Anti-tubercular drugs + steroids \nSelect and explain. \nA. a, B. bc, C. ac, D. b", 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]