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': 'Flaccid bullae lesions with oral mucosal lesions. The finding in immunoflourescence is – \nSelect and explain. \nA. Fish net IgG in epidermis, B. Linear IgG in DEJ, C. Granular IgA in dermal papillae, D. Linear IgA in reticular dermis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Flaccid\xa0bullae with involvement of oral mucosa suggest the diagnosis of pemphigus vulgaris.\nIn pamphigus, there is\xa0intercellular deposition of IgG in fish-net pattern.', 'role': 'assistant'}]