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
True statement among the following regarding diaphragm
is 
Select and explain. 
A. Thoracic duct is a content of Oesophageal opening, B. Left Vagus nerve passes via Venacaval opening, C. Azygos vein is a content of Aortic opening, D. Sympathetic chain passes behind lateral arcuate ligament
C: Azygos vein is a content of Aortic opening
Answer: C: Azygos vein is a content of Aortic opening 
Explanation: Azygos vein, Aorta and Thoracid duct are the contents of Aortic opening.