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': 'Inferior thyroid vein drains into? \nSelect and explain. \nA. Internal jugular vein, B. Superior ven cava, C. Brachiocephalic vein, D. External jugular vein', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Superior & middle thyroid veins drain into the internal jugular vein and the inferior thyroid vein drain into the brachiocephalic vein.', 'role': 'assistant'}]