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
Cricothyroid is supplied by 
Select and explain. 
A. Recurrent laryngeal, B. External laryngeal, C. Internal laryngeal, D. Superior laryngeal
B: External laryngeal
Answer: B: External laryngeal 
Explanation: None