This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Joint disorders, Subject name: Orthopaedics
Joint involved in Rheumatoid ahritis are all except 
Select and explain. 
A. PROXIMAL INTERPHALYNGEAL JOINT, B. DISTAL INTERPHALYNGEAL JOINTS, C. METACARPO PHALYNGEAL JOINT, D. CERVICAL C1-C2 JOINT
B: DISTAL INTERPHALYNGEAL JOINTS
Answer: B: DISTAL INTERPHALYNGEAL JOINTS 
Explanation: REF : MAHESWARI 9TH ED