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: Surgery
Any cuffed tube that is passed into trachea should reach: 
Select and explain. 
A. Above vocal cords., B. Below vocal cords., C. At the level of vocal cords., D. Any of the above.
B: Below vocal cords.
Answer: B: Below vocal cords. 
Explanation: None