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
Anatomical snuff box content: 
Select and explain. 
A. Radial artery, B. Axillary nerve, C. Brachial artery, D. Ulnar artery
A: Radial artery
Answer: A: Radial artery 
Explanation: Anatomical snuff box is a depression which appears on the lateral aspect of wrist and becomes prominent when thumb is extended.
BOUNDARIES.

Anteriolateral Radial- abductor pollicis longus and extensor pollicis brevis
Postero-medial ulnar - extensor pollicis longus
Floor- scaphoid and trapezium
Roof- subcutaneous tissue and skin.