This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Medicine
[{'content': "Lisch Nodules are seen \nSelect and explain. \nA. Neurofibromatosis I, B. Sturge weber's syndrome, C. Tuberous sclerosis, D. Von hippel lindau syndrome", 'role': 'user'}, {'content': "Answer: A \nExplanation: Harrison's principles of internal medicine 17 th edition. *Multiple neurofibromas usually in combination with 6 or more CALM measuring>1.5 cm, axillary freckling and multiple Lisch nodules are seen in NF type 1.", 'role': 'assistant'}]