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
Circle of hebra is associated with: 
Select and explain. 
A. Syphilis, B. Scabies, C. Leprosy, D. Lichen planus
B: Scabies
Answer: B: Scabies 
Explanation: B. i.e. Scabies