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: Pathology
Pseudoarthrosis of Tibia is classical feature of? 
Select and explain. 
A. Sturge Weber syndrome, B. Neurofibromatosis type 1, C. Neurofibromatosis type 2, D. Tuberous sclerosis
B: Neurofibromatosis type 1
Answer: B: Neurofibromatosis type 1 
Explanation: Pseudoarthrosis of Tibia and scoliosis are classicle feature of NF 1.