This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology and Rheumatology, Subject name: Medicine
[{'content': 'The number of Neurofibromas as one of the diagnostic criteria for adult neurofibromatosis type-I - \nSelect and explain. \nA. >1, B. > 2, C. > 4, D. > 6', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., > 2o Repeat from previous.o Presence of two or more neurofibromas of any type constitutes one of the diagnostic criterias for diagnosis of neurofibromatosis (Type-1).o The diagnostic criteria for diagnosis of neurofibromatosis Type-1 include six or more cafe-au-lait spots: Two or more neurofibromas of any type, or one or more plexiform neurofibromas; Two or more Lisch nodules (benign iris hamartomas).", 'role': 'assistant'}]