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
Most severe form of scabies? 
Select and explain. 
A. Norwegian scabies, B. Neular sabies, C. Animal scabies, D. Genital
A: Norwegian scabies
Answer: A: Norwegian scabies 
Explanation: A i.e. Norwegion scabies