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
Butchers' was are caused by: 
Select and explain. 
A. HPV 2, B. HPV 6, C. HPV 27, D. HPV 56
A: HPV 2
Answer: A: HPV 2 
Explanation: Occupational handlers of meat, poultry or fish have a high incidence of hand was where the skin is in prolonged contact with moist animal flesh. HPV-2 is frequently found in butchers' was, but HPV-7 is present in a third to a half of lesions. Ref: Rook's textbook of dermatology, 8th edition, Pg 33.47