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': 'False about School Vision Screening Programme is \nSelect and explain. \nA. Screening is done by Teacher, B. Age group screened is 5-10 years, C. One teacher is for 150 students, D. Cut off for referral of a child is vision < 6/9', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]