This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Larynx, Subject name: ENT
Hoarseness with stridor is seen in 
Select and explain. 
A. Unilateral abductor palsy, B. Bilateral abductor palsy, C. Both, D. None
D: None
Answer: D: None 
Explanation: In Unilateral abductor palsy voice is normal or some may have some problems, but usually asymptomatic In Bilateral abductor palsy as both the cords lie in a median or paramedian position, the airway is inadequate causing dyspnoea and stridor but the voice is good. Dyspnoea and stridor become worse on exeion or during an attack of acute laryngitis. Ref: PL Dhingra Textbook of Ear, Nose and Throat, Edition 7, page - 337,338