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 structure related to arch of aoa is: 
Select and explain. 
A. Left bronchus, B. Tracheal bifurcation, C. Ligament of teres, D. Right Vagus
B: Tracheal bifurcation
Answer: B: Tracheal bifurcation 
Explanation: Tracheal bifurcation