This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2019, Subject name: Pharmacology
[{'content': 'What is the dose of mifepristone in Medical aboion? \nSelect and explain. \nA. 600 mg, B. 200 mg, C. 400 mg, D. 100 mg', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Dose used for medical aboion: 600 mg single dose to be taken within 72 hours Mifepristone: 10 mg single dose is used as an emergency contraceptive. Mifepristone is selective progesterone receptor modulator (SPRM). ACTS as antagonist of progesterone receptors in uterus Antagonist to glucocoicoid receptors Antagonist to androgen receptors.', 'role': 'assistant'}]