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: Gynaecology & Obstetrics
[{'content': 'CA - 125 increased in all EXCEPT : \nSelect and explain. \nA. T.B. of genital organ, B. Ovarian cancer, C. Endometriosis, D. Stein - leventhal syndrome', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Stein - leventhal syndrome', 'role': 'assistant'}]