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
Esophagus is present in which mediastinum ? 
Select and explain. 
A. Anterior, B. Posterior, C. Middle, D. None
B: Posterior
Answer: B: Posterior 
Explanation: Ans. is 'b' i.e., Posterior