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: Skin
[{'content': 'All are true regarding LCH except \nSelect and explain. \nA. Papular trunk lesions with scaling & crusting, B. Ulcerative nodules on mucosa, C. Calvarial defect with map lesions & floating teeth, D. CD - 68 positive', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. CD - 68 positive', 'role': 'assistant'}]