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
The term "guyon's canal" is in relation to which of the following? 
Select and explain. 
A. Anterior interosseus nerve, B. Ulnar nerve, C. Median nerve, D. Radial artery
B: Ulnar nerve
Answer: B: Ulnar nerve 
Explanation: An entrapment syndrome when ulnar nerve passes through Guyon’s canal, is known as Guyon’s canal syndrome.