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: Orthopaedics
Carpel tunnel syndrome is due to compression of - 
Select and explain. 
A. Radial nerve, B. Ulnar nerve, C. Palmer branch of the Ulnar nerve, D. Median nerve
D: Median nerve
Answer: D: Median nerve 
Explanation: Carpal tunnel syndrome occurs when the median nerve is compressed in the carpal tunnel below flexor retinaculum.