This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper limb, Subject name: Anatomy
[{'content': 'About radial bone true statements. \nSelect and explain. \nA. Radial groove is present, B. Major contributor to wrist joint, C. Lateral bone of forearm, D. Medial bone of forearm', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The major contribution to the wrist joint is from the ulna. The ulna is located on the medial side of the forearm, and the radius is on the lateral side. These bones are attached to each other by an interosseous membrane. The ulna is the medial bone of the forearm REF: BD Chaurasia 7th edition Page no: 18.', 'role': 'assistant'}]