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 osteoarthritis 
Select and explain. 
A. Most common joint disease, B. DIP joint is spared, C. Non-Inflammatory condition, D. Narrowing of joint space
B: DIP joint is spared
Answer: B: DIP joint is spared 
Explanation: None