This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Operative Gynecology, Subject name: Gynaecology & Obstetrics
[{'content': 'Upon Hysteroscopy which of the following cannot be seen: \nSelect and explain. \nA. Tubal ostia, B. Cervix, C. Endometrium, D. Tubal patency', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Hysteroscopy is best for diagnosing lesions within the uterine cavity Also: Abnormal Uterine Bleeding Oligomenorrhea amenorrhea, Recurrent Pregnancy loss Endometrial carcinoma, Un-explained infeility Suspected anomalies Missing IUCDs Diagnosing intra uterine submucous fibroids, Polyps, adhesions Septums etc.', 'role': 'assistant'}]