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': 'In Esophageal speech, the dynamic component is- \nSelect and explain. \nA. Buccal segment, B. Pharyngo- esophageal segment, C. Trachea, D. Pharynx', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]