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: Medicine
Auenbrugger's sign is seen in 
Select and explain. 
A. Pericardial effusion, B. Mitral regurgitation, C. Cardiac tamponade, D. HOCM
A: Pericardial effusion
Answer: A: Pericardial effusion 
Explanation: Bulging of the epigastrium (Auenbrugger's sign) seen in cases of large pericardial effusion.