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': 'An elderly multiparous woman with IUD was admitted with strong labour pains. The patient suddenly goes with shock with cyanosis, respiratory disturbance and pulmonar edema. The most likely clinical diagnosis is : \nSelect and explain. \nA. Rupture uterus, B. CHF, C. Amniotic fluid embolism, D. Concealed accidental hemorrhage', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Amniotic fluid embolism', 'role': 'assistant'}]