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': 'For radical treatment of malaria, primaquine is given in dosage of - \nSelect and explain. \nA. 15 mg per day for 3 days, B. 10 mg per day for 7 days, C. 15 mg per day for 5 days, D. 5 mg per day for 10 days', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]