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': 'It is true about seminoma testis that - \nSelect and explain. \nA. It commonly occurs in the 6th decade, B. An undescended testes is more liable to develop this tumour, C. Histologically it resembles dysgerminoma of the ovary, D. It is radioresistant', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., CT or and orchidectomy", 'role': 'assistant'}]