This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Pathology
[{'content': 'CA-125 is a marker antigen for the diagnosis of \nSelect and explain. \nA. Colon cancer, B. Breast cancer, C. Brain cancer, D. Ovarian cancer', 'role': 'user'}, {'content': 'Answer: D \nExplanation: (D) Ovarian Carcinoma MARKERSMucins & other GlycoproteinsAssociated Cancers* CA-125Ovarian cancer* CA-19-9Colon cancer, pancreatic cancer* CA-15-3Breast cancer', 'role': 'assistant'}]