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': 'Commonest congenital anomaly of uterus is : \nSelect and explain. \nA. Uterus bicornis unicollis, B. Uterus unicornis, C. Uterus bicornis bicollis, D. Uterus didelphys', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Uterus bicornis unicollis', 'role': 'assistant'}]