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
Which of the following is NOT true of Sturge Weber syndrome? 
Select and explain. 
A. Hennangiomatous involvement of skin, B. Mostly bilateral, C. Port wine nevus, D. Vascular gingival hyperplasia
B: Mostly bilateral
Answer: B: Mostly bilateral 
Explanation: None