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
Pisiform aiculates with - 
Select and explain. 
A. Scaphoid, B. Trapezium, C. Triquetral, D. Lunate
C: Triquetral
Answer: C: Triquetral 
Explanation: Triquetral