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': 'The cailage of A is \nSelect and explain. \nA. Fibrous, B. Elastic, C. White fibro-cailage, D. Hyaline', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The epiglottis is a leaf-shaped elastic cailage situated behind the root of the tongue.', 'role': 'assistant'}]