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
Which among the following is the last tributary of the azygos vein? 
Select and explain. 
A. Right-superior intercostal vein, B. Hemi-azygos vein, C. Right bronchial vein, D. Accessory azygos vein
C: Right bronchial vein
Answer: C: Right bronchial vein 
Explanation: Azygos vein receives venous drainage from the right bronchial vein near its termination. Tributaries of the azygos vein include: The right superior intercostal vein (a single vessel formed by the second, third, and fouh intercostal veins)Fifth to eleventh right posterior intercostal veinsThe hemiazygos veinThe accessory hemiazygos veinEsophageal veinsMediastinal veinsPericardial veinsRight bronchial veinsRef: Gray's Basic Anatomy By Richard Drake, A. Wayne Vogl, Adam W. M. Mitchell, 2012, Page 127.