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
Lisch nodules in neurofibromatosis are - 
Select and explain. 
A. Iris pearls, B. Hamartomas, C. Granulomas, D. None of the above
B: Hamartomas
Answer: B: Hamartomas 
Explanation: None