This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pemphigus, Subject name: Skin
Commonest variety of pemphigus: 
Select and explain. 
A. Pemphigus vulgaris, B. Pemphigus vegetans, C. Pemphigus foliaceus, D. Pemphigus erythematosia
A: Pemphigus vulgaris
Answer: A: Pemphigus vulgaris 
Explanation: Ans is 'a' i.e, Pemphigus vulgaris