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': 'Most common tumor of urinary bladder is? \nSelect and explain. \nA. Squamous cell cancer, B. Carcinosarcoma, C. Transitional cell cancer, D. Clear cell cancer', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) Transitional cell cancerRef: Bailey & Love 26th ed. /1330-35', 'role': 'assistant'}]