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': 'Emergency contraceptive drugs are: \nSelect and explain. \nA. Levo-norgestrel, B. Estrogen + progesterone, C. Mifepristone, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Postcoital (emergency) contraception : 1. Levonorgestrel 0.5 mg + ethinylestradiol 0.1mg taken as early as possible but within 72 hours of unprotected intercourse and repeated after 1 2 hours. Progesterone and estrogen combination can also be used in emergency contraception. 2. levonorgestrel 3. ulipristal 4. mifepristone (REF.Essentials of Pharmacology TD TRIPATHI 6th EDITION page no 310)', 'role': 'assistant'}]