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
Night blindness may be associated with: March 2004 
Select and explain. 
A. Vitamin A deficiency, B. Cirrhosis of liver, C. Malingering, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Ans. D i.e. All of the above