This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Costochondral joint is an example of \nSelect and explain. \nA. Fibrous joint, B. Primary cailaginous joint, C. Secondary cailaginous joint, D. Synol joint', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Primary Cailaginous joint The bones are united by a plate of hyaline cailage so that the joint is immovable and strong These joints are tempory in nature because after a ceain age the cailaginous plate is repalced by bone (synostosis) Ref :BD CHAURASIA S Handbook of General Anatomy Fouh edition Page no 63', 'role': 'assistant'}]