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: Pediatrics
Characteristic feature of Systemic Juvenile Idiopathic Arthritis is 
Select and explain. 
A. Uveitis is a feature, B. It occurs after 16 years of age, C. NSAIDs are contraindicated, D. RA factor is negative
D: RA factor is negative
Answer: D: RA factor is negative 
Explanation: Systemic Juvenile Idiopathic Arthritis

It begins at below 16 years of age
NSAIDs are given 
Ra factor is negative
Uveitus is seen in oligoarticular JIA