This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Scabies, Subject name: Skin
Pathognomic lesion of scabies is? 
Select and explain. 
A. Papules, B. Vesicle, C. Burrow, D. Pits
C: Burrow
Answer: C: Burrow 
Explanation: Ans. (c) BurrowRef : Rook's 8/e, p 38.36.39