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': 'Tumour invodes corpus spongiosum with or without urethral invasion, belong to which stage of carcinoma penis? \nSelect and explain. \nA. T1, B. T2, C. T3, D. T4', 'role': 'user'}, {'content': 'Answer: B \nExplanation: T2 : Tumour > 5 cm or incodes corpus spongiosum, cavernosum with or without urethral invasion.', 'role': 'assistant'}]