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
Flaccid bullae with mucosal involvement and intraepidermal acantholysis are characteristic of? 
Select and explain. 
A. Pemphygus vulgaris, B. Pemphigus foliaceous, C. Psoriasis, D. Vitiligo
A: Pemphygus vulgaris
Answer: A: Pemphygus vulgaris 
Explanation: Ans. is 'a' i.e., Pemphygus vulgaris Among the given options, two are vesicullabullous disorders :- Pemphigus vulgaris Pemphigus foliaceous Both of these cause flaccid bullae with intraepidermal blisters. but, mucosal involvement is common in pemphigus vulgaris (not in P foliaceous).