This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Obstetrics, Subject name: Gynaecology & Obstetrics
[{'content': 'All of the following drug are used for medical management of ectopic pregnancy except : \nSelect and explain. \nA. Potassium Chloride, B. Methotrexate, C. Misoprostol, D. Mifepristone', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Misoprostol is a prostaglandin and its efficiency is not proven beyond a reasonable doubt as far as management of an ectopic pregnancy is concerned. Drugs used for Medical Management of Ectopic Pregnancy - Methotrexate Actinomycin D KCl Mifepristone', 'role': 'assistant'}]