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': 'Ullipristal, as an emergency contraceptive can be taken upto how many hours of unprotected intercourse \nSelect and explain. \nA. 72 hours, B. 120 hours, C. 60 hours, D. 48 hours', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ullipristal can be taken upto 120hours of unprotective intercourse.', 'role': 'assistant'}]