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
Which of the movements of thumb are not affected in radial nerve injury 
Select and explain. 
A. Opposition, B. Abduction, C. Extension, D. All of the above
A: Opposition
Answer: A: Opposition 
Explanation: Abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus are supplied by deep branch of radial nerve so injury will affect the movements such as extension and abduction. Opponens pollicis is supplied by the muscular branches of median nerve in the palm. Mnemonic Radial nerve supplies "BEST muscle" Brachialioradialis Extensors of wrist Supinator Triceps brachii B D Chaurasia 7th edition Page no: 181