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: Anatomy
Wrist joint is formed by articulation of - 
Select and explain. 
A. Lower end of radius and carpal bones, B. Lower end of radius, articular disc and carpal bones, C. Lower end of radius and ulna, and carpal bones, D. Lower end of radius and intercarpal joint or inferior radioulnar joint
B: Lower end of radius, articular disc and carpal bones
Answer: B: Lower end of radius, articular disc and carpal bones 
Explanation: Components of wrist joint
-        Distal end of radius
-        Articular disc of inferior radioulnar joint
-        Scaphoid, lunate, triquetral.