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: Medicine
[{'content': 'Features of seronegative spondyloahropathy include all of the following, Except: \nSelect and explain. \nA. Strong association with HLA B27, B. Negative Rheumatoid Factor, C. Symmetrical Polyahritis, D. Enthesitis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Answer is C (Symmetrical Polyahritis): Seronegative spondyloahropathies are usually associated with Asymmetrical Oligoahritsis and not symmetrical polyahritis. The seronegative spondyloahritis have the following in common: Negative RF Strong association with HLA-B27 antigen Oligoahritis (asymmetrical) Enthesitis (inflammation at sites of inseion of fascia, ligament or tendon to bone) Inflammatory ahritis (axial and sacroiliac joints) Extra-aicular features (eyes, skin, genitourinary tract) Familial predisposition', 'role': 'assistant'}]