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: Ophthalmology
[{'content': 'Founder members of vision 2020 are A/E \nSelect and explain. \nA. WHO, B. UNICEF, C. ORBIS, D. International Agency for prevention of blindness', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. UNICEF', 'role': 'assistant'}]