This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Physiology
[{'content': "The aoic component of the second hea sound is best heard at what location? \nSelect and explain. \nA. Infraclavicular region, B. Ludwig's angle to the right, C. Apex, D. 2nd intercostal space to the left", 'role': 'user'}, {'content': "Answer: B \nExplanation: Aoic area lies in the right second intercostal space near to sternum (Ludwig's angle)Ref: Medical Physiology Indu Khurana 2015 edition page No:212", 'role': 'assistant'}]