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': 'Microlaryngoscopy was staed by: \nSelect and explain. \nA. Bruce Benjamin, B. Kleinsasser, C. Chevalier Jackson, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The present day microsurgical techniques of the larynx are a credit to Kleinsasser.', 'role': 'assistant'}]