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 arch of aorta lies in the ---- mediastinum - 
Select and explain. 
A. Posterior, B. Anterior, C. Middle, D. Superior
D: Superior
Answer: D: Superior 
Explanation: Arch of aorta lies in superior mediastinum.