This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Non communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'DMPA is an injectible contraceptive given every - \nSelect and explain. \nA. Three weeks, B. Two months, C. Three months, D. Two years', 'role': 'user'}, {'content': "Answer: C \nExplanation: park's textbook of preventive and social medicine 23rd edition. *DMPA has been in use since 1960s.The standard dose is an I'M injection of 150 mg every 3 months.It gives protection from pregnancy in 99% of women for at least 3 months.", 'role': 'assistant'}]