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': 'A 10 year old boy developed hoarseness of voice following an attack of diphtheria. On examination, his Rt vocal cord was paralysed.The treatment of choice for paralysed vocal cord will be: \nSelect and explain. \nA. Gel foam injection of right vocal cord, B. Fat injection of right vocal cord, C. Thyroplasty type-I, D. Wait for spontaneous recovery of vocal cord', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Unilateral paralysis of cord due to neuritis (as in diphtheria) does not require any treatment as it recovers spontaneously. The characteristic features of diphtherial neuropathy is that it recovers completely.', 'role': 'assistant'}]