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': 'Vocal cord palsy is not associated with - \nSelect and explain. \nA. Vertebral secondaries, B. Left atrial enlargement, C. Bronchogenic carcinoma, D. secondaries in mediastinum', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]