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': 'Post - coital contraceptive methods include all of the following except : \nSelect and explain. \nA. RU - 486, B. Danzol, C. Copper - T inseion, D. Nonoxynol', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Nonoxynol', 'role': 'assistant'}]