This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Rheumatoid Ahritis, Subject name: Medicine
Which ahritis is common with uveitis? 
Select and explain. 
A. RA, B. Ankylosing spondylitis, C. Still's disease, D. Reiter's disease
B: Ankylosing spondylitis
Answer: B: Ankylosing spondylitis 
Explanation: Uveitis is the most common extra-aicular manifestation of AS, occurring in 20-30% of patients. The incidence is much higher in individuals who are HLA-B27 positive (84- 90%). Immune-mediated causes of uveitis Ankylosing spondylitis Behcet's disease Drug or hypersensitivity reaction Inflammatory bowel disease Multiple sclerosis Psoriatic ahritis Reactive ahritis Relapsing polychondritis Rheumatic fever Sarcoidosis Sclerosing cholangitis Systemic lupus Vogt-Koyanagi-Harada Syndrome