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': 'Extragonadal germ cell tumors occur in all of the following except - \nSelect and explain. \nA. Sacrococcygeal region, B. Mediastinum, C. Brain, D. Testis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Extragonadal germ cell tumors occur at\xa0: -\n\nMediastinum\xa0→\xa0M.C. site. \xa0 \xa0 \xa0\nRetroperitoneum \xa0→\xa02nd M.C. site. \xa0 \xa0\xa0\nSacrococcygeal region\xa0→\xa0Sacrococcygeal teratoma.\nPineal gland', 'role': 'assistant'}]