This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hand, Subject name: Anatomy
[{'content': 'Pisiform bone articulates with? \nSelect and explain. \nA. Triquetral, B. Lunate, C. Scaphoid, D. Trapezoid', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. (a) TriquetralRef: Snell's 8th ed / 402", 'role': 'assistant'}]