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
In Lichen planus TOC is: 
Select and explain. 
A. Topical Salicylic acid, B. UV ray, C. Systemic steroids, D. Erythromycin
C: Systemic steroids
Answer: C: Systemic steroids 
Explanation: C i.e. Systemic Steroids