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: Orthopaedics
Not true about Ankylosing spondylitis 
Select and explain. 
A. HLA B-27 positive, B. Sacroiliitis, C. Uveitis, D. Epidermolysis Bullosa
D: Epidermolysis Bullosa
Answer: D: Epidermolysis Bullosa 
Explanation: None