<prompt> Intraepidermal blister formation is seen inPemphigus VulgarisPemphigoidDermatitis herpetiformisNone of the above  <response>: Pemphigus vulgaris a. Blisters in pemphigus vulgaris are wiraepidermal while those in bullous pemphigoid are subepidermal. b. Typical acantholytic Tzanck cells are seen in pemphigus vulgaris but not in bullous pemphigoid. c. Nikolsky s sign is positive in pemphigus vulgaris but not in bullous pemphigoid. 