This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2017, Subject name: Anatomy
Which of the following structure passes through Guyon's canal:- 
Select and explain. 
A. Flexor carpi radialis, B. Radial nerve, C. Ulnar nerve, D. Median nerve
C: Ulnar nerve
Answer: C: Ulnar nerve 
Explanation: RELATIONS OF ULNAR NERVE: (I) pisiform bone (laterally) (ii)hook of hamate passes superficial to flexor retinaculum. Handle bar injury causes the compression of ulnar nerve in Guyon's canal SYMPTOMS: tingling sensation of skin over medial 1 and 1/2 fingers.