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
Which of the following is life threatening? 
Select and explain. 
A. U/L abductor paralysis, B. B/L abductor paralysis, C. U/L adductor paralysis, D. B/L adductor paralysis
B: B/L abductor paralysis
Answer: B: B/L abductor paralysis 
Explanation: In bilateral abductor paralysis (due to B/L recurrent laryngeal nerve palsy), both the cords assume a median position due to unopposed action of cricothyroid muscle. The airway is inadequate in this condition, causing dyspnea. The condition can be life threatening.