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
S2 is best appreciated in 
Select and explain. 
A. 3rd left intercostal space, B. 2nd right intercostal space, C. 4th left intercostal space, D. 5th left intercostal space
A: 3rd left intercostal space
Answer: A: 3rd left intercostal space 
Explanation: Ans. is 'a' i.e., 3rd left intercostal space