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': 'Zinc supplement given in 12 month baby \nSelect and explain. \nA. 10 mg/day, B. 5 mg/day, C. 15 mg/day, D. 20 mg/day', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]