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 layer is absent in – \nSelect and explain. \nA. Ichthyosis vulgaris, B. X linked ischyosis, C. Epidermolytic hyperkeratosis, D. Lamellar ichthyosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: In Ichthyosis vulgaris there is deficiency of filaggrin a protein found in granular layer. This results in absence of granular layer.', 'role': 'assistant'}]