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
A patient has calcification on AP view of right side of abdomen. In lateral view, calcification is seen to overlie the spine. The most likely diagnosis is: 
Select and explain. 
A. Gall stone, B. Calcified mesenteric nodes, C. Renal stones, D. Calcification in veebral sphenoid process
C: Renal stones
Answer: C: Renal stones 
Explanation: Ans. Renal stones