This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'Elevated CA-125 are seen in - \nSelect and explain. \nA. Abdominal TB, B. Ca cervix, C. Endometriosis, D. Ovarian ca', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Harshmohan textbook of pathology 7th edition. *ca 125 is a tumor marker for ovarian cancer.', 'role': 'assistant'}]