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
[{'content': 'Which of the following is life threatening? \nSelect and explain. \nA. U/L abductor paralysis, B. B/L abductor paralysis, C. U/L adductor paralysis, D. B/L adductor paralysis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: 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.', 'role': 'assistant'}]