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 hyperophy is seen radiologically as: 
Select and explain. 
A. Double cardiac silhoutte, B. Left bronchial elevation, C. Right ant. oblique view in barium swallow, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Ans. All of the above