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': 'The following drug is not helpful in the treatment of ectopic pregnancy: \nSelect and explain. \nA. Methotrexate, B. Misoprostol, C. Actinomycin-D, D. RU486', 'role': 'user'}, {'content': "Answer: B \nExplanation: Misoprostol (PGE1) has been used for cervical ripening which is used for induction of labour. It doesn't have any role in management of ectopic pregnancy. Ref:Text Book of Obstetrics By Dutta, 6th Edition, Pages 175, 189, 505", 'role': 'assistant'}]