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': 'After a full term normal delivery patient went into shock Most probable cause is \nSelect and explain. \nA. Inversion of uterus, B. Post-paum hemorrhage, C. Amniotic fluid embolism, D. Eclampsia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a. Inversion of uterus', 'role': 'assistant'}]