This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autoimmune skin disorders, Subject name: Dental
[{'content': 'Cafe au lait spots seen in? \nSelect and explain. \nA. NF, B. Gardner syndrome, C. Cockayne syndrome, D. Down syndrome', 'role': 'user'}, {'content': "Answer: A \nExplanation: clinical criteria to diagnose neurofibromatosis include 6 or more cafeaelait macules, 2 or more neurofibromas, Freckling in axillary and inguinal regions, Optic gliomas , 2 or more Lisch nodules, A distinctive osseous lesion, A first degree relative with NF1. Page no 322 Reference IADVL's concise textbook of dermatology", 'role': 'assistant'}]