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: Medicine
[{'content': 'All are true about patients with neuro fibromatosis except that they are prone for - \nSelect and explain. \nA. Gliomas, B. Retinoblastoma, C. Swachonoma, D. Meningioma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]