<prompt> Subepidermal bullae on trunk and flexural surface with linear C3IgG basement membrane deposite are feature ofBullous pemphigoidPemphigus vulgarisLinear Ig A diseaseDermatitis herpatifonnis  <response>: Bullous pemphigoid shows :- Subepidermal bullae;C3 and IgG linear band at denno - epidermal junction Basement membrane. 