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: Radiology
The posterior iliac horn is characteristic of: 
Select and explain. 
A. Nail-patella syndrome, B. Marfan's syndrome, C. Hurler syndrome, D. Acromegaly
A: Nail-patella syndrome
Answer: A: Nail-patella syndrome 
Explanation: Ans. Nail-patella syndrome