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
Which laryngeal cartilage is not elastic - 
Select and explain. 
A. Epiglottis, B. Corniculate, C. Cuneiform, D. Thyroid
D: Thyroid
Answer: D: Thyroid 
Explanation: None