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: Dental
[{'content': 'Granular deposits of IgA is seen in: \nSelect and explain. \nA. Bullous pemphigoid, B. Linear IgA bullous disorder, C. Dermatitis Herpetiformis, D. Hailey-Hailey disease', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Bullous pemphigoid : Linear deposition of IgA and IgG at DEJ\nLinear IgA bullous disorder : Linear deposition of IgA at DEJ\nDermatitis herpetiformis : Focal granular\xa0IgA deposits at papilary tips.\nHailey-Hailey disease : DIF\xa0: negative', 'role': 'assistant'}]