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: Pathology
[{'content': 'Most common tumor of urinary bladder is - \nSelect and explain. \nA. Squamous cell carcinoma, B. Adenocarcinoma, C. Transitional carcinoma, D. Stratified squamous carcinoma', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]