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': 'Following vasectomy for family planning, a patient should be advised to use some other method of contraception, till : \nSelect and explain. \nA. Removal of all sutures, B. Pain completely subsides, C. Two weeks, D. None', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]