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: Pathology
[{'content': 'Which of the following testicular tumor is not a germ cell neoplasm - \nSelect and explain. \nA. Seminoma, B. Yolk sac tumor, C. Sertoli cell tumor, D. Teratoma', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Testicular tumor\n\nTesticular tumors are divided into two major categories : -\n\nGerm cell tumors :\xa0\nSeminoma\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\nEmbryonal carcinoma\xa0\nYolk sac (endodermal sinus) tumor\nSpermatocytic seminoma\xa0\xa0\xa0\nChoriocarcinoma\nTeratoma\nSex cord tumors :\nLeydig cells tumor\nSertoli cell tumor\n\nApproximately 95% of testicular tumors are germ cell tumors.', 'role': 'assistant'}]