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
Abductors of larynx are: 
Select and explain. 
A. Posterior cricoarytenoids, B. Transverse arytenoids, C. Cricothyroid, D. All of the above
A: Posterior cricoarytenoids
Answer: A: Posterior cricoarytenoids 
Explanation: None