This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thorax, Subject name: Anatomy
1. Which does not pass through the aoic opening(2018) 
Select and explain. 
A. A) Aoa, B. B) Vagus nerve, C. C) Azygos vein, D. D) Thoracic duct
B: B) Vagus nerve
Answer: B: B) Vagus nerve 
Explanation: The aoic hiatus trans- mits the aoa, thoracic duct, lymphatic trunks from the lower posterior thoracic wall and, sometimes, the azygos and hemiazygos veins