This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vesiculobullous (Blistering) Disorders, Subject name: Skin
[{'content': 'A patient presenting with tense bullae on erythematous base. On histopathological examination following can be seen? \nSelect and explain. \nA. Subcorneal split, B. Sub epidermal split, C. Fishnet pattern, D. Raw of tomb stones appearance', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Sub epidermal split * Tense bullae on erythematous base on erythematous base are characteristic presentation of bullous pemphigoid. Bullous pemphigoid is a sub epidermal blistering disorder.* Characteristic histopathological finding of BP is sub epidermal split with relatively normal epidermis and mixed inflammatory infiltrate consisting of numerous eosinophils, mononuclear cells and few neutrophills.", 'role': 'assistant'}]