This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vestibulobullous disorders, Subject name: Dental
[{'content': 'Which of the following shows granular depositionof IgA in dermal papilla \nSelect and explain. \nA. Dermatitis herpetiformis, B. IgA papillomatosis of childhood, C. Bu11ous pemphigoid, D. Gestational herpes', 'role': 'user'}, {'content': "Answer: A \nExplanation: In Direct immunofluorescence intercellular IgG -fishnet pattern throughout the epidermis is seen in pemphigus vulgaris.Linear IgG and C3 at basement membrane zone is seen in bullous pemphigoid. Granular IgA at basement membrane zone and tips of papillae is seen in Dermatitis herpetiformis page no.287 Reference IADVL's concise textbook of dermatology", 'role': 'assistant'}]