This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pharmacology
[{'content': 'All of these is not a non contraceptive use of Levonorgestrel \nSelect and explain. \nA. Endometriosis, B. Pro menstrual tension, C. Complex endometrial hyperplasia, D. Emergency contraception', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Refer Williams Obstetrics 24/e p 714 Drugs used for emergency contraception Levonorgestrel Ethinyl estradiol +Norgesterol Mifepristone Copper IUDs Centchroman Ullipristal', 'role': 'assistant'}]