This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Umblicial cord and diaphragm, Subject name: Anatomy
An aneurysm of the abdominal aoa found at the aoic hiatus of the diaphragm. Which of the following pairs of structures would most likely be compressed? 
Select and explain. 
A. Vagus nerve and azygos vein, B. Esophagus and vagus nerve, C. Azygos vein and thoracic duct, D. Thoracic duct and vagus nerve
C: Azygos vein and thoracic duct
Answer: C: Azygos vein and thoracic duct 
Explanation: CHOICE EXPLANATION & ELIMINATION REASON 1 Vagus pass through oesophageal opening 2 Not correct 3 Correct option 4 Not correct Structure passing through aoic hiatus Aoa Azygous vein Thoracic duct