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: Skin
[{'content': 'Extermely pruritic excoriation & papules on buttocks with autoantibodies against epidermal transglutaminase and IgA deposition in dermis on immuno-histological examination of normal perilesional skin. Diagnosis is: \nSelect and explain. \nA. Pemphigus vulgaris, B. Pemphigoid, C. Linear IgA disease, D. Dermatitis herpetiformis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Dermatitis herpetiformis', 'role': 'assistant'}]