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
[{'content': 'True about VSD is \nSelect and explain. \nA. S2 is loud, B. Diastolic murmur is heard, C. S3 is left sided, D. S2 split is wide and fixed', 'role': 'user'}, {'content': 'Answer: C \nExplanation: S1 and S2 are soft in VSD\nThere is pansystolic murmur\nSince LV dilates first ,S3 is left sided\nS2 split is wide and variable.', 'role': 'assistant'}]