This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
Visual acuity used as cut off for school screening program is 
Select and explain. 
A. 12-Jun, B. 9-Jun, C. 6-Jun, D. 18-Jun
B: 9-Jun
Answer: B: 9-Jun 
Explanation: Initial screening done by school teachers