This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urinary tract, Subject name: Pathology
[{'content': 'Most common type of bladder cancer is \nSelect and explain. \nA. Squamous cell carcinoma, B. Urothelial carcinoma, C. Adenocarcinoma, D. Carcinoid', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Types of bladder cancers*Epithelial tumours: (95%)*Urothelial ( Transitional ) carcinomas- Most common*Squamous cell carcinoma*Adenocarcinoma Rare types*Small cell carcinoma*Mesenchymal tumours: (5%)*Sarcomas', 'role': 'assistant'}]