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
In rheumatoid ahritis pathology stas in 
Select and explain. 
A. Aicular cailage, B. Capsule, C. Synovium, D. Muscle
C: Synovium
Answer: C: Synovium 
Explanation: Answer- C. SynoviumRA is a chronic multisystem disorder that may affect many tissues and organs, but principally attacks the joint, producing a nonsuppurative proliferative and inflammatory synovitis that often progresses to destruction of the aicular cailage and ankylosis ofthe joint.