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': 'Most common testicular tumour in 4th decade is: March 2009 \nSelect and explain. \nA. Teratoma, B. Dermoid, C. Seminoma, D. All of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C: Seminoma Peak incidence for teratomas is 20-35 years and for seminomas is 35-45 years Seminoma is rare before pubey.', 'role': 'assistant'}]