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': 'Highest vitamin A content is seen in: September 2004 \nSelect and explain. \nA. Lemon, B. Green leafy vegetables, C. Tomato, D. Ragi', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B i.e. Green leafy vegetables', 'role': 'assistant'}]