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: Dental
Nikolsky sign is positive in all except – 
Select and explain. 
A. Pemphigus, B. Bullous pemphigoid, C. Toxic epidermal Necrolysis, D. Staphylococcal skin scaled syndrome
B: Bullous pemphigoid
Answer: B: Bullous pemphigoid 
Explanation: None