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': 'Histological examination of the tissues in desquamative gingivitis would reveal? \nSelect and explain. \nA. Hyperkeratosis, B. Elongation of rete pegs, C. Loss of basement membrane, D. No inflammatory response', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]