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': 'Structure present in anatomical snuff box: \nSelect and explain. \nA. Ulnar artery, B. Radial Artery, C. Median nerve, D. Radial nerve', 'role': 'user'}, {'content': 'Answer: B \nExplanation: • Anatomical snuff box is a depression which appears on the lateral aspect of wrist and becomes prominent when thumb is extended.\n• BOUNDARIES-\n■ Anteriolateral Radial- abductor pollicis longus and extensor pollicis brevis\n■ Postero-medial ulnar - extensor pollicis longus\n■ Floor- scaphoid and trapezium\n■ Roof- subcutaneous tissue and skin.', 'role': 'assistant'}]