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
[{'content': 'Supination - pronation occurs at ? \nSelect and explain. \nA. Wrist joint, B. Radiocarpal joint, C. Radio-ulnar joint, D. Elbow joint', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Radio-ulnar joint', 'role': 'assistant'}]