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: Skin
The mainstay of treatment of vitiligo is? 
Select and explain. 
A. PUVA, B. Imiqinod, C. Acyclovir, D. Coal tar
A: PUVA
Answer: A: PUVA 
Explanation: Ans. is 'a' i.e., PUVA