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': 'Strassman operation consists of : \nSelect and explain. \nA. Tightening of internal cervical os, B. Unification of septate uterus, C. Sling operation for prolapse, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Unification of septate uterus', 'role': 'assistant'}]