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: Social & Preventive Medicine
[{'content': 'A depot contraceptive DMPA is to be given in every: \nSelect and explain. \nA. 1 month, B. 2 months, C. 3 months, D. 6 months', 'role': 'user'}, {'content': 'Answer: C \nExplanation: 3 months', 'role': 'assistant'}]