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: Anatomy
[{'content': 'Cailage in trachea ? \nSelect and explain. \nA. Hyaline, B. Elastic, C. Aicular, D. Fibro', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Hyaline", 'role': 'assistant'}]