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': 'In what age group seminoma are common \nSelect and explain. \nA. 5-6th decade of life, B. 4-5th decade of life, C. 3-4th decade of life, D. 6-7th decade of life', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Seminomas are present in 3rd to 4th decade of life.\nSeminomas have best prognosis.', 'role': 'assistant'}]