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': 'Depot medroxy progesterone acetate is \nSelect and explain. \nA. Subdermal progestin implant, B. 150 mg dose given i.v every 90days, C. Known to dimnish bone mineral density, D. Increases risk of endometrial cancer', 'role': 'user'}, {'content': "Answer: C \nExplanation: DMPA is an injectable progestin, given i.m Being a progestin it doesn't increase risk of ovarian and endometrial cancer.", 'role': 'assistant'}]