This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Joints, Subject name: Anatomy
Artery of anatomical snuftbox- 
Select and explain. 
A. Radial, B. Ulnar, C. Brachial, D. None
A: Radial
Answer: A: Radial 
Explanation: Ans, is 'a' i.e., Radial Anatomical Snuffboxo Triangular depression on the dorsal and radial aspect of the hand become visible when thumb is fully extended. Boundarieso Medial/Posterior--Tendon of the extensor pollicis longus.o Lateral/ Anterior--Tendon of the extensor pollicis brevis and abductor pollicis longus.o Roof--Skin and fascia with beginning of cephalic vein and crossed by superficial branch of the radial nerve,o Floor--Styloid process of radius, trapezium, scaphoid and base of 1 st metacarpal,o Contents--The radial artery.