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
Dullness on percussion in the Traube's semilunar area denotes: 
Select and explain. 
A. Cardiomegaly, B. Splenomegaly, C. Hepatomegaly, D. All of the above
B: Splenomegaly
Answer: B: Splenomegaly 
Explanation: None