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
All are seen on right side of cardiac shadow in X-Ray chest PA view except 
Select and explain. 
A. Superior venacava, B. Rt. atrium, C. Ascending Aoa, D. Inferior venacava
C: Ascending Aoa
Answer: C: Ascending Aoa 
Explanation: C i.e. Ascending aoa