This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General, Subject name: Medicine
[{'content': 'S2 is best appreciated in - \nSelect and explain. \nA. 3rd left intercostal space, B. 2nd right intercostal space, C. 4th left intercostal space, D. 5th left intercostal space', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., 3rd left intercostal space o Best areas to auscultate for both components of the second heart sound (A2 and P2) are either the left sternal border at the level of second intercostal space (Pulmonic area) or the left sternal border at the level of third intercostal space (Erb s point).", 'role': 'assistant'}]