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
[{'content': 'The last tributary of the azygos vein is - \nSelect and explain. \nA. Right superior intercostal vein, B. Hemi-azygos vein, C. Right bronchial vein, D. Accessory azygos vein', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Tributaries of Azygos vein\n\nRight superior intercostal vein\nRight posterior intercostal veins (5 to 11)\nHemiazygos vein\nAccessory hemiazygos vein\nRight bronchial vein- last tributary that joins Azygos vein just before its termination.\nEsophageal, mediastinal and pericardial veins.', 'role': 'assistant'}]