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': "Tietze's syndrome usually develops at costal cailage - \nSelect and explain. \nA. First and Second ribs, B. Second to fifth ribs, C. Sixth to Eighth, D. All seven ribs", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer- B. Second to fifth ribsTietze syndrome is characterized by mild to severe localized pain and tenderness in one or more of the upper four ribs.The second or third ribs are most oftm affected', 'role': 'assistant'}]