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
True about VSD is 
Select and explain. 
A. S2 is loud, B. Diastolic murmur is heard, C. S3 is left sided, D. S2 split is wide and fixed
C: S3 is left sided
Answer: C: S3 is left sided 
Explanation: S1 and S2 are soft in VSD
There is pansystolic murmur
Since LV dilates first ,S3 is left sided
S2 split is wide and variable.