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
The internal thoracic veins are tributaries of the : 
Select and explain. 
A. Azygos, B. Subclan, C. Internal jugular, D. Brachiocephalic
D: Brachiocephalic
Answer: D: Brachiocephalic 
Explanation: D i.e. Brachio cephalic vein