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
Vision 2020 include all of the following, Except ? 
Select and explain. 
A. Cataract, B. Refractory Errors, C. Vitamin A Deficiency, D. Diabetic Retinopathn
C: Vitamin A Deficiency
Answer: C: Vitamin A Deficiency 
Explanation: Ans. is ' c' i.e., Vitamin A Deficiency