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
Abductor pollicis brevis is supplied by - 
Select and explain. 
A. Ulnar nerve, B. Median nerve, C. Ulnar and Median nerve, D. Radial nerve
B: Median nerve
Answer: B: Median nerve 
Explanation: None