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
Unilateral palsy of external laryngeal nerve leads to 
Select and explain. 
A. Aphonia, B. Hoarseness of voice, C. Paralysis, D. Loss of timber of voice
B: Hoarseness of voice
Answer: B: Hoarseness of voice 
Explanation: None