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
On exposure to sunlight which Vitamin is lost ? 
Select and explain. 
A. Vitamin A, B. Vitamin B1, C. Vitamin B2, D. Vitamin C
D: Vitamin C
Answer: D: Vitamin C 
Explanation: Ans. is 'd' i.e., Vitamin C