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
Flaccid bullae lesions with oral mucosal lesions. The finding in immunoflourescence is – 
Select and explain. 
A. Fish net IgG in epidermis, B. Linear IgG in DEJ, C. Granular IgA in dermal papillae, D. Linear IgA in reticular dermis
A: Fish net IgG in epidermis
Answer: A: Fish net IgG in epidermis 
Explanation: Flaccid bullae with involvement of oral mucosa suggest the diagnosis of pemphigus vulgaris.
In pamphigus, there is intercellular deposition of IgG in fish-net pattern.