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
Subepidermal bullae on trunk and flexural surface with linear C3/IgG basement membrane deposite are feature of – 
Select and explain. 
A. Bullous pemphigoid, B. Pemphigus vulgaris, C. Linear Ig A disease, D. Dermatitis herpatifonnis
A: Bullous pemphigoid
Answer: A: Bullous pemphigoid 
Explanation: Bullous pemphigoid shows :- 

Subepidermal bullae;
C3 and IgG linear band at denno - epidermal junction (Basement membrane).