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: ENT
The voice is not affected in: 
Select and explain. 
A. Unilateral abductor palsy, B. Unilateral adductor palsy, C. B/L superior laryngeal palsy, D. Total adductor palsy
A: Unilateral abductor palsy
Answer: A: Unilateral abductor palsy 
Explanation: In U/L abductor palsy, the affected vocal cord assumes a median or paramedian position. The other is normal so one third patients are asymptomatic while others may have some voice change.