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': "Bandl's ring is associated with : \nSelect and explain. \nA. Cephalopelvic dispropoion, B. Fetal death, C. Uterine ineia, D. Placenta pre", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Cephalopelvic dispropoion', 'role': 'assistant'}]