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': 'Not a testicular tumor marker - \nSelect and explain. \nA. a-1 antitrypsin, B. HCG, C. Alfa feto protein, D. CA-125', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Answer- D. CA-125CA-125 is an ovarian tumor marker.', 'role': 'assistant'}]