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

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