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': 'Urinary bladder calcification radiologicaly which resemble fetal head in pelvis is \nSelect and explain. \nA. Adenocarcinoma of bladder, B. Bladder stone, C. Schistosomiasis, D. Marion’s disease', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Schistosomiasis is associated bladder carcinoma ( SCC > TCC).', 'role': 'assistant'}]