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: Radiology
Left atrial enlargement is best seen with: 
Select and explain. 
A. Chest X-ray AP view, B. Chest X-ray left lateral view, C. Barium swallow right anterior oblique view, D. Barium swallow left anterior oblique view
C: Barium swallow right anterior oblique view
Answer: C: Barium swallow right anterior oblique view 
Explanation: Ans. Barium swallow right anterior oblique view