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: Unknown
Dysphagia lusoria is most commonly caused by- 
Select and explain. 
A. Aberrant Hemiazygous vein, B. Aberrant right subclavian artery, C. Enlarged mediastinal nodes, D. Thymoma in mediastinum
B: Aberrant right subclavian artery
Answer: B: Aberrant right subclavian artery 
Explanation: Ans. is 'b' i.e., Aberrant right subclavian artery o Has been explained in previous sessions.